git.oblomov.eu Git - wine/blob - controls/edit.c

   1 /*
   2  *      Edit control
   3  *
   4  *      Copyright  David W. Metcalfe, 1994
   5  *      Copyright  William Magro, 1995, 1996
   6  *      Copyright  Frans van Dorsselaer, 1996, 1997
   7  *
   8  */
   9
  10 /*
  11  *      please read EDIT.TODO (and update it when you change things)
  12  */
  13
  14 #include "config.h"
  15
  16 #include <string.h>
  17 #include <stdlib.h>
  18
  19 #include "winbase.h"
  20 #include "winnt.h"
  21 #include "win.h"
  22 #include "wine/winbase16.h"
  23 #include "wine/winuser16.h"
  24 #include "wine/unicode.h"
  25 #include "controls.h"
  26 #include "local.h"
  27 #include "user.h"
  28 #include "debugtools.h"
  29
  30 DEFAULT_DEBUG_CHANNEL(edit);
  31 DECLARE_DEBUG_CHANNEL(combo);
  32 DECLARE_DEBUG_CHANNEL(relay);
  33
  34 #define BUFLIMIT_MULTI          65534   /* maximum buffer size (not including '\0')
  35                                            FIXME: BTW, new specs say 65535 (do you dare ???) */
  36 #define BUFLIMIT_SINGLE         32766   /* maximum buffer size (not including '\0') */
  37 #define GROWLENGTH              32      /* buffers granularity in bytes: must be power of 2 */
  38 #define ROUND_TO_GROW(size)     (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
  39 #define HSCROLL_FRACTION        3       /* scroll window by 1/3 width */
  40
  41 /*
  42  *      extra flags for EDITSTATE.flags field
  43  */
  44 #define EF_MODIFIED             0x0001  /* text has been modified */
  45 #define EF_FOCUSED              0x0002  /* we have input focus */
  46 #define EF_UPDATE               0x0004  /* notify parent of changed state on next WM_PAINT */
  47 #define EF_VSCROLL_TRACK        0x0008  /* don't SetScrollPos() since we are tracking the thumb */
  48 #define EF_HSCROLL_TRACK        0x0010  /* don't SetScrollPos() since we are tracking the thumb */
  49 #define EF_AFTER_WRAP           0x0080  /* the caret is displayed after the last character of a
  50                                            wrapped line, instead of in front of the next character */
  51 #define EF_USE_SOFTBRK          0x0100  /* Enable soft breaks in text. */
  52
  53 typedef enum
  54 {
  55         END_0 = 0,      /* line ends with terminating '\0' character */
  56         END_WRAP,       /* line is wrapped */
  57         END_HARD,       /* line ends with a hard return '\r\n' */
  58         END_SOFT        /* line ends with a soft return '\r\r\n' */
  59 } LINE_END;
  60
  61 typedef struct tagLINEDEF {
  62         INT length;             /* bruto length of a line in bytes */
  63         INT net_length; /* netto length of a line in visible characters */
  64         LINE_END ending;
  65         INT width;              /* width of the line in pixels */
  66         struct tagLINEDEF *next;
  67 } LINEDEF;
  68
  69 typedef struct
  70 {
  71         BOOL is_unicode;                /* how the control was created */
  72         LPWSTR text;                    /* the actual contents of the control */
  73         UINT buffer_size;               /* the size of the buffer in characters */
  74         UINT buffer_limit;              /* the maximum size to which the buffer may grow in characters */
  75         HFONT font;                     /* NULL means standard system font */
  76         INT x_offset;                   /* scroll offset        for multi lines this is in pixels
  77                                                                 for single lines it's in characters */
  78         INT line_height;                /* height of a screen line in pixels */
  79         INT char_width;         /* average character width in pixels */
  80         DWORD style;                    /* sane version of wnd->dwStyle */
  81         WORD flags;                     /* flags that are not in es->style or wnd->flags (EF_XXX) */
  82         INT undo_insert_count;  /* number of characters inserted in sequence */
  83         UINT undo_position;             /* character index of the insertion and deletion */
  84         LPWSTR undo_text;               /* deleted text */
  85         UINT undo_buffer_size;          /* size of the deleted text buffer */
  86         INT selection_start;            /* == selection_end if no selection */
  87         INT selection_end;              /* == current caret position */
  88         WCHAR password_char;            /* == 0 if no password char, and for multi line controls */
  89         INT left_margin;                /* in pixels */
  90         INT right_margin;               /* in pixels */
  91         RECT format_rect;
  92         INT text_width;                 /* width of the widest line in pixels for multi line controls
  93                                            and just line width for single line controls */
  94         INT region_posx;                /* Position of cursor relative to region: */
  95         INT region_posy;                /* -1: to left, 0: within, 1: to right */
  96         EDITWORDBREAKPROC16 word_break_proc16;
  97         void *word_break_proc;          /* 32-bit word break proc: ANSI or Unicode */
  98         INT line_count;         /* number of lines */
  99         INT y_offset;                   /* scroll offset in number of lines */
 100         BOOL bCaptureState; /* flag indicating whether mouse was captured */
 101         BOOL bEnableState;             /* flag keeping the enable state */
 102         HWND hwndListBox;              /* handle of ComboBox's listbox or NULL */
 103         /*
 104          *      only for multi line controls
 105          */
 106         INT lock_count;         /* amount of re-entries in the EditWndProc */
 107         INT tabs_count;
 108         LPINT tabs;
 109         LINEDEF *first_line_def;        /* linked list of (soft) linebreaks */
 110         HLOCAL hloc32W;         /* our unicode local memory block */
 111         HLOCAL16 hloc16;        /* alias for 16-bit control receiving EM_GETHANDLE16
 112                                    or EM_SETHANDLE16 */
 113         HLOCAL hloc32A;         /* alias for ANSI control receiving EM_GETHANDLE
 114                                    or EM_SETHANDLE */
 115 } EDITSTATE;
 116
 117
 118 #define SWAP_INT32(x,y) do { INT temp = (INT)(x); (x) = (INT)(y); (y) = temp; } while(0)
 119 #define ORDER_INT(x,y) do { if ((INT)(y) < (INT)(x)) SWAP_INT32((x),(y)); } while(0)
 120
 121 #define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
 122 #define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
 123
 124 #define DPRINTF_EDIT_NOTIFY(hwnd, str) \
 125         do {TRACE("notification " str " sent to hwnd=%08x\n", \
 126                        (UINT)(hwnd));} while(0)
 127
 128 /* used for disabled or read-only edit control */
 129 #define EDIT_SEND_CTLCOLORSTATIC(wnd,hdc) \
 130         (SendMessageW((wnd)->parent->hwndSelf, WM_CTLCOLORSTATIC, \
 131                         (WPARAM)(hdc), (LPARAM)(wnd)->hwndSelf))
 132 #define EDIT_SEND_CTLCOLOR(wnd,hdc) \
 133         (SendMessageW((wnd)->parent->hwndSelf, WM_CTLCOLOREDIT, \
 134                         (WPARAM)(hdc), (LPARAM)(wnd)->hwndSelf))
 135 #define EDIT_NOTIFY_PARENT(wnd, wNotifyCode, str) \
 136         do {DPRINTF_EDIT_NOTIFY((wnd)->parent->hwndSelf, str); \
 137         SendMessageW((wnd)->parent->hwndSelf, WM_COMMAND, \
 138                      MAKEWPARAM((wnd)->wIDmenu, wNotifyCode), \
 139                      (LPARAM)(wnd)->hwndSelf);} while(0)
 140 #define DPRINTF_EDIT_MSG16(str) \
 141         TRACE(\
 142                      "16 bit : " str ": hwnd=%08x, wParam=%08x, lParam=%08x\n", \
 143                      (UINT)wnd->hwndSelf, (UINT)wParam, (UINT)lParam)
 144 #define DPRINTF_EDIT_MSG32(str) \
 145         TRACE(\
 146                      "32 bit %c : " str ": hwnd=%08x, wParam=%08x, lParam=%08x\n", \
 147                      unicode ? 'W' : 'A', \
 148                      (UINT)wnd->hwndSelf, (UINT)wParam, (UINT)lParam)
 149
 150 /*********************************************************************
 151  *
 152  *      Declarations
 153  *
 154  */
 155
 156 /*
 157  *      These functions have trivial implementations
 158  *      We still like to call them internally
 159  *      "static inline" makes them more like macro's
 160  */
 161 static inline BOOL      EDIT_EM_CanUndo(EDITSTATE *es);
 162 static inline void      EDIT_EM_EmptyUndoBuffer(EDITSTATE *es);
 163 static inline void      EDIT_WM_Clear(WND *wnd, EDITSTATE *es);
 164 static inline void      EDIT_WM_Cut(WND *wnd, EDITSTATE *es);
 165
 166 /*
 167  *      Helper functions only valid for one type of control
 168  */
 169 static void     EDIT_BuildLineDefs_ML(WND *wnd, EDITSTATE *es);
 170 static void     EDIT_CalcLineWidth_SL(WND *wnd, EDITSTATE *es);
 171 static LPWSTR   EDIT_GetPasswordPointer_SL(EDITSTATE *es);
 172 static void     EDIT_MoveDown_ML(WND *wnd, EDITSTATE *es, BOOL extend);
 173 static void     EDIT_MovePageDown_ML(WND *wnd, EDITSTATE *es, BOOL extend);
 174 static void     EDIT_MovePageUp_ML(WND *wnd, EDITSTATE *es, BOOL extend);
 175 static void     EDIT_MoveUp_ML(WND *wnd, EDITSTATE *es, BOOL extend);
 176 /*
 177  *      Helper functions valid for both single line _and_ multi line controls
 178  */
 179 static INT      EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action);
 180 static INT      EDIT_CharFromPos(WND *wnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap);
 181 static void     EDIT_ConfinePoint(EDITSTATE *es, LPINT x, LPINT y);
 182 static void     EDIT_GetLineRect(WND *wnd, EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc);
 183 static void     EDIT_InvalidateText(WND *wnd, EDITSTATE *es, INT start, INT end);
 184 static void     EDIT_LockBuffer(WND *wnd, EDITSTATE *es);
 185 static BOOL     EDIT_MakeFit(WND *wnd, EDITSTATE *es, UINT size);
 186 static BOOL     EDIT_MakeUndoFit(EDITSTATE *es, UINT size);
 187 static void     EDIT_MoveBackward(WND *wnd, EDITSTATE *es, BOOL extend);
 188 static void     EDIT_MoveEnd(WND *wnd, EDITSTATE *es, BOOL extend);
 189 static void     EDIT_MoveForward(WND *wnd, EDITSTATE *es, BOOL extend);
 190 static void     EDIT_MoveHome(WND *wnd, EDITSTATE *es, BOOL extend);
 191 static void     EDIT_MoveWordBackward(WND *wnd, EDITSTATE *es, BOOL extend);
 192 static void     EDIT_MoveWordForward(WND *wnd, EDITSTATE *es, BOOL extend);
 193 static void     EDIT_PaintLine(WND *wnd, EDITSTATE *es, HDC hdc, INT line, BOOL rev);
 194 static INT      EDIT_PaintText(EDITSTATE *es, HDC hdc, INT x, INT y, INT line, INT col, INT count, BOOL rev);
 195 static void     EDIT_SetCaretPos(WND *wnd, EDITSTATE *es, INT pos, BOOL after_wrap);
 196 static void     EDIT_SetRectNP(WND *wnd, EDITSTATE *es, LPRECT lprc);
 197 static void     EDIT_UnlockBuffer(WND *wnd, EDITSTATE *es, BOOL force);
 198 static void     EDIT_UpdateScrollInfo(WND *wnd, EDITSTATE *es);
 199 static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action);
 200 /*
 201  *      EM_XXX message handlers
 202  */
 203 static LRESULT  EDIT_EM_CharFromPos(WND *wnd, EDITSTATE *es, INT x, INT y);
 204 static BOOL     EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol);
 205 static HLOCAL   EDIT_EM_GetHandle(EDITSTATE *es);
 206 static HLOCAL16 EDIT_EM_GetHandle16(WND *wnd, EDITSTATE *es);
 207 static INT      EDIT_EM_GetLine(EDITSTATE *es, INT line, LPARAM lParam, BOOL unicode);
 208 static LRESULT  EDIT_EM_GetSel(EDITSTATE *es, LPUINT start, LPUINT end);
 209 static LRESULT  EDIT_EM_GetThumb(WND *wnd, EDITSTATE *es);
 210 static INT      EDIT_EM_LineFromChar(EDITSTATE *es, INT index);
 211 static INT      EDIT_EM_LineIndex(EDITSTATE *es, INT line);
 212 static INT      EDIT_EM_LineLength(EDITSTATE *es, INT index);
 213 static BOOL     EDIT_EM_LineScroll(WND *wnd, EDITSTATE *es, INT dx, INT dy);
 214 static BOOL     EDIT_EM_LineScroll_internal(WND *wnd, EDITSTATE *es, INT dx, INT dy);
 215 static LRESULT  EDIT_EM_PosFromChar(WND *wnd, EDITSTATE *es, INT index, BOOL after_wrap);
 216 static void     EDIT_EM_ReplaceSel(WND *wnd, EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update);
 217 static LRESULT  EDIT_EM_Scroll(WND *wnd, EDITSTATE *es, INT action);
 218 static void     EDIT_EM_ScrollCaret(WND *wnd, EDITSTATE *es);
 219 static void     EDIT_EM_SetHandle(WND *wnd, EDITSTATE *es, HLOCAL hloc);
 220 static void     EDIT_EM_SetHandle16(WND *wnd, EDITSTATE *es, HLOCAL16 hloc);
 221 static void     EDIT_EM_SetLimitText(EDITSTATE *es, INT limit);
 222 static void     EDIT_EM_SetMargins(EDITSTATE *es, INT action, INT left, INT right);
 223 static void     EDIT_EM_SetPasswordChar(WND *wnd, EDITSTATE *es, WCHAR c);
 224 static void     EDIT_EM_SetSel(WND *wnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap);
 225 static BOOL     EDIT_EM_SetTabStops(EDITSTATE *es, INT count, LPINT tabs);
 226 static BOOL     EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, LPINT16 tabs);
 227 static void     EDIT_EM_SetWordBreakProc(WND *wnd, EDITSTATE *es, LPARAM lParam);
 228 static void     EDIT_EM_SetWordBreakProc16(WND *wnd, EDITSTATE *es, EDITWORDBREAKPROC16 wbp);
 229 static BOOL     EDIT_EM_Undo(WND *wnd, EDITSTATE *es);
 230 /*
 231  *      WM_XXX message handlers
 232  */
 233 static void     EDIT_WM_Char(WND *wnd, EDITSTATE *es, WCHAR c);
 234 static void     EDIT_WM_Command(WND *wnd, EDITSTATE *es, INT code, INT id, HWND conrtol);
 235 static void     EDIT_WM_ContextMenu(WND *wnd, EDITSTATE *es, INT x, INT y);
 236 static void     EDIT_WM_Copy(WND *wnd, EDITSTATE *es);
 237 static LRESULT  EDIT_WM_Create(WND *wnd, EDITSTATE *es, LPCWSTR name);
 238 static void     EDIT_WM_Destroy(WND *wnd, EDITSTATE *es);
 239 static LRESULT  EDIT_WM_EraseBkGnd(WND *wnd, EDITSTATE *es, HDC dc);
 240 static INT      EDIT_WM_GetText(EDITSTATE *es, INT count, LPARAM lParam, BOOL unicode);
 241 static LRESULT  EDIT_WM_HScroll(WND *wnd, EDITSTATE *es, INT action, INT pos);
 242 static LRESULT  EDIT_WM_KeyDown(WND *wnd, EDITSTATE *es, INT key);
 243 static LRESULT  EDIT_WM_KillFocus(WND *wnd, EDITSTATE *es);
 244 static LRESULT  EDIT_WM_LButtonDblClk(WND *wnd, EDITSTATE *es);
 245 static LRESULT  EDIT_WM_LButtonDown(WND *wnd, EDITSTATE *es, DWORD keys, INT x, INT y);
 246 static LRESULT  EDIT_WM_LButtonUp(HWND hwndSelf, EDITSTATE *es);
 247 static LRESULT  EDIT_WM_MButtonDown(WND *wnd);
 248 static LRESULT  EDIT_WM_MouseMove(WND *wnd, EDITSTATE *es, INT x, INT y);
 249 static LRESULT  EDIT_WM_NCCreate(WND *wnd, DWORD style, HWND hwndParent, BOOL unicode);
 250 static void     EDIT_WM_Paint(WND *wnd, EDITSTATE *es, WPARAM wParam);
 251 static void     EDIT_WM_Paste(WND *wnd, EDITSTATE *es);
 252 static void     EDIT_WM_SetFocus(WND *wnd, EDITSTATE *es);
 253 static void     EDIT_WM_SetFont(WND *wnd, EDITSTATE *es, HFONT font, BOOL redraw);
 254 static void     EDIT_WM_SetText(WND *wnd, EDITSTATE *es, LPARAM lParam, BOOL unicode);
 255 static void     EDIT_WM_Size(WND *wnd, EDITSTATE *es, UINT action, INT width, INT height);
 256 static LRESULT  EDIT_WM_SysKeyDown(WND *wnd, EDITSTATE *es, INT key, DWORD key_data);
 257 static void     EDIT_WM_Timer(WND *wnd, EDITSTATE *es);
 258 static LRESULT  EDIT_WM_VScroll(WND *wnd, EDITSTATE *es, INT action, INT pos);
 259 static void EDIT_UpdateText(WND *wnd, LPRECT rc, BOOL bErase);
 260
 261 LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 262 LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 263
 264 /*********************************************************************
 265  * edit class descriptor
 266  */
 267 const struct builtin_class_descr EDIT_builtin_class =
 268 {
 269     "Edit",               /* name */
 270     CS_GLOBALCLASS | CS_DBLCLKS /*| CS_PARENTDC*/,   /* style */
 271     EditWndProcA,         /* procA */
 272     EditWndProcW,         /* procW */
 273     sizeof(EDITSTATE *),  /* extra */
 274     IDC_IBEAMA,           /* cursor */
 275     0                     /* brush */
 276 };
 277
 278
 279 /*********************************************************************
 280  *
 281  *      EM_CANUNDO
 282  *
 283  */
 284 static inline BOOL EDIT_EM_CanUndo(EDITSTATE *es)
 285 {
 286         return (es->undo_insert_count || strlenW(es->undo_text));
 287 }
 288
 289
 290 /*********************************************************************
 291  *
 292  *      EM_EMPTYUNDOBUFFER
 293  *
 294  */
 295 static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
 296 {
 297         es->undo_insert_count = 0;
 298         *es->undo_text = '\0';
 299 }
 300
 301
 302 /*********************************************************************
 303  *
 304  *      WM_CLEAR
 305  *
 306  */
 307 static inline void EDIT_WM_Clear(WND *wnd, EDITSTATE *es)
 308 {
 309         static const WCHAR empty_stringW[] = {0};
 310
 311         /* Protect read-only edit control from modification */
 312         if(es->style & ES_READONLY)
 313             return;
 314
 315         EDIT_EM_ReplaceSel(wnd, es, TRUE, empty_stringW, TRUE);
 316
 317         if (es->flags & EF_UPDATE) {
 318                 es->flags &= ~EF_UPDATE;
 319                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
 320         }
 321 }
 322
 323
 324 /*********************************************************************
 325  *
 326  *      WM_CUT
 327  *
 328  */
 329 static inline void EDIT_WM_Cut(WND *wnd, EDITSTATE *es)
 330 {
 331         EDIT_WM_Copy(wnd, es);
 332         EDIT_WM_Clear(wnd, es);
 333 }
 334
 335
 336 /**********************************************************************
 337  *         get_app_version
 338  *
 339  * Returns the window version in case Wine emulates a later version
 340  * of windows then the application expects.
 341  *
 342  * In a number of cases when windows runs an application that was
 343  * designed for an earlier windows version, windows reverts
 344  * to "old" behaviour of that earlier version.
 345  *
 346  * An example is a disabled  edit control that needs to be painted.
 347  * Old style behaviour is to send a WM_CTLCOLOREDIT message. This was
 348  * changed in Win95, NT4.0 by a WM_CTLCOLORSTATIC message _only_ for
 349  * applications with an expected version 0f 4.0 or higher.
 350  *
 351  */
 352 static DWORD get_app_version(void)
 353 {
 354     static DWORD version;
 355     if (!version)
 356     {
 357         DWORD dwEmulatedVersion;
 358         OSVERSIONINFOW info;
 359         DWORD dwProcVersion = GetProcessVersion(0);
 360
 361         GetVersionExW( &info );
 362         dwEmulatedVersion = MAKELONG( info.dwMinorVersion, info.dwMajorVersion );
 363         /* fixme: this may not be 100% correct; see discussion on the
 364          * wine developer list in Nov 1999 */
 365         version = dwProcVersion < dwEmulatedVersion ? dwProcVersion : dwEmulatedVersion;
 366     }
 367     return version;
 368 }
 369
 370
 371 /*********************************************************************
 372  *
 373  *      EditWndProc_locked
 374  *
 375  *      The messages are in the order of the actual integer values
 376  *      (which can be found in include/windows.h)
 377  *      Whereever possible the 16 bit versions are converted to
 378  *      the 32 bit ones, so that we can 'fall through' to the
 379  *      helper functions.  These are mostly 32 bit (with a few
 380  *      exceptions, clearly indicated by a '16' extension to their
 381  *      names).
 382  *
 383  */
 384 static LRESULT WINAPI EditWndProc_locked( WND *wnd, UINT msg,
 385                                           WPARAM wParam, LPARAM lParam, BOOL unicode )
 386 {
 387         EDITSTATE *es = *(EDITSTATE **)((wnd)->wExtra);
 388         LRESULT result = 0;
 389
 390         switch (msg) {
 391         case WM_DESTROY:
 392                 DPRINTF_EDIT_MSG32("WM_DESTROY");
 393                 EDIT_WM_Destroy(wnd, es);
 394                 result = 0;
 395                 goto END;
 396
 397         case WM_NCCREATE:
 398                 DPRINTF_EDIT_MSG32("WM_NCCREATE");
 399                 if(unicode)
 400                 {
 401                     LPCREATESTRUCTW cs = (LPCREATESTRUCTW)lParam;
 402                     result = EDIT_WM_NCCreate(wnd, cs->style, cs->hwndParent, TRUE);
 403                 }
 404                 else
 405                 {
 406                     LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
 407                     result = EDIT_WM_NCCreate(wnd, cs->style, cs->hwndParent, FALSE);
 408                 }
 409                 goto END;
 410         }
 411
 412         if (!es)
 413         {
 414             if(unicode)
 415                 result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
 416             else
 417                 result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
 418             goto END;
 419         }
 420
 421
 422         EDIT_LockBuffer(wnd, es);
 423         switch (msg) {
 424         case EM_GETSEL16:
 425                 DPRINTF_EDIT_MSG16("EM_GETSEL");
 426                 wParam = 0;
 427                 lParam = 0;
 428                 /* fall through */
 429         case EM_GETSEL:
 430                 DPRINTF_EDIT_MSG32("EM_GETSEL");
 431                 result = EDIT_EM_GetSel(es, (LPUINT)wParam, (LPUINT)lParam);
 432                 break;
 433
 434         case EM_SETSEL16:
 435                 DPRINTF_EDIT_MSG16("EM_SETSEL");
 436                 if (SLOWORD(lParam) == -1)
 437                         EDIT_EM_SetSel(wnd, es, (UINT)-1, 0, FALSE);
 438                 else
 439                         EDIT_EM_SetSel(wnd, es, LOWORD(lParam), HIWORD(lParam), FALSE);
 440                 if (!wParam)
 441                         EDIT_EM_ScrollCaret(wnd, es);
 442                 result = 1;
 443                 break;
 444         case EM_SETSEL:
 445                 DPRINTF_EDIT_MSG32("EM_SETSEL");
 446                 EDIT_EM_SetSel(wnd, es, wParam, lParam, FALSE);
 447                 EDIT_EM_ScrollCaret(wnd, es);
 448                 result = 1;
 449                 break;
 450
 451         case EM_GETRECT16:
 452                 DPRINTF_EDIT_MSG16("EM_GETRECT");
 453                 if (lParam)
 454                         CONV_RECT32TO16(&es->format_rect, MapSL(lParam));
 455                 break;
 456         case EM_GETRECT:
 457                 DPRINTF_EDIT_MSG32("EM_GETRECT");
 458                 if (lParam)
 459                         CopyRect((LPRECT)lParam, &es->format_rect);
 460                 break;
 461
 462         case EM_SETRECT16:
 463                 DPRINTF_EDIT_MSG16("EM_SETRECT");
 464                 if ((es->style & ES_MULTILINE) && lParam) {
 465                         RECT rc;
 466                         CONV_RECT16TO32(MapSL(lParam), &rc);
 467                         EDIT_SetRectNP(wnd, es, &rc);
 468                         EDIT_UpdateText(wnd, NULL, TRUE);
 469                 }
 470                 break;
 471         case EM_SETRECT:
 472                 DPRINTF_EDIT_MSG32("EM_SETRECT");
 473                 if ((es->style & ES_MULTILINE) && lParam) {
 474                         EDIT_SetRectNP(wnd, es, (LPRECT)lParam);
 475                         EDIT_UpdateText(wnd, NULL, TRUE);
 476                 }
 477                 break;
 478
 479         case EM_SETRECTNP16:
 480                 DPRINTF_EDIT_MSG16("EM_SETRECTNP");
 481                 if ((es->style & ES_MULTILINE) && lParam) {
 482                         RECT rc;
 483                         CONV_RECT16TO32(MapSL(lParam), &rc);
 484                         EDIT_SetRectNP(wnd, es, &rc);
 485                 }
 486                 break;
 487         case EM_SETRECTNP:
 488                 DPRINTF_EDIT_MSG32("EM_SETRECTNP");
 489                 if ((es->style & ES_MULTILINE) && lParam)
 490                         EDIT_SetRectNP(wnd, es, (LPRECT)lParam);
 491                 break;
 492
 493         case EM_SCROLL16:
 494                 DPRINTF_EDIT_MSG16("EM_SCROLL");
 495                 /* fall through */
 496         case EM_SCROLL:
 497                 DPRINTF_EDIT_MSG32("EM_SCROLL");
 498                 result = EDIT_EM_Scroll(wnd, es, (INT)wParam);
 499                 break;
 500
 501         case EM_LINESCROLL16:
 502                 DPRINTF_EDIT_MSG16("EM_LINESCROLL");
 503                 wParam = (WPARAM)(INT)SHIWORD(lParam);
 504                 lParam = (LPARAM)(INT)SLOWORD(lParam);
 505                 /* fall through */
 506         case EM_LINESCROLL:
 507                 DPRINTF_EDIT_MSG32("EM_LINESCROLL");
 508                 result = (LRESULT)EDIT_EM_LineScroll(wnd, es, (INT)wParam, (INT)lParam);
 509                 break;
 510
 511         case EM_SCROLLCARET16:
 512                 DPRINTF_EDIT_MSG16("EM_SCROLLCARET");
 513                 /* fall through */
 514         case EM_SCROLLCARET:
 515                 DPRINTF_EDIT_MSG32("EM_SCROLLCARET");
 516                 EDIT_EM_ScrollCaret(wnd, es);
 517                 result = 1;
 518                 break;
 519
 520         case EM_GETMODIFY16:
 521                 DPRINTF_EDIT_MSG16("EM_GETMODIFY");
 522                 /* fall through */
 523         case EM_GETMODIFY:
 524                 DPRINTF_EDIT_MSG32("EM_GETMODIFY");
 525                 result = ((es->flags & EF_MODIFIED) != 0);
 526                 break;
 527
 528         case EM_SETMODIFY16:
 529                 DPRINTF_EDIT_MSG16("EM_SETMODIFY");
 530                 /* fall through */
 531         case EM_SETMODIFY:
 532                 DPRINTF_EDIT_MSG32("EM_SETMODIFY");
 533                 if (wParam)
 534                         es->flags |= EF_MODIFIED;
 535                 else
 536                         es->flags &= ~(EF_MODIFIED | EF_UPDATE);  /* reset pending updates */
 537                 break;
 538
 539         case EM_GETLINECOUNT16:
 540                 DPRINTF_EDIT_MSG16("EM_GETLINECOUNT");
 541                 /* fall through */
 542         case EM_GETLINECOUNT:
 543                 DPRINTF_EDIT_MSG32("EM_GETLINECOUNT");
 544                 result = (es->style & ES_MULTILINE) ? es->line_count : 1;
 545                 break;
 546
 547         case EM_LINEINDEX16:
 548                 DPRINTF_EDIT_MSG16("EM_LINEINDEX");
 549                 if ((INT16)wParam == -1)
 550                         wParam = (WPARAM)-1;
 551                 /* fall through */
 552         case EM_LINEINDEX:
 553                 DPRINTF_EDIT_MSG32("EM_LINEINDEX");
 554                 result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
 555                 break;
 556
 557         case EM_SETHANDLE16:
 558                 DPRINTF_EDIT_MSG16("EM_SETHANDLE");
 559                 EDIT_EM_SetHandle16(wnd, es, (HLOCAL16)wParam);
 560                 break;
 561         case EM_SETHANDLE:
 562                 DPRINTF_EDIT_MSG32("EM_SETHANDLE");
 563                 EDIT_EM_SetHandle(wnd, es, (HLOCAL)wParam);
 564                 break;
 565
 566         case EM_GETHANDLE16:
 567                 DPRINTF_EDIT_MSG16("EM_GETHANDLE");
 568                 result = (LRESULT)EDIT_EM_GetHandle16(wnd, es);
 569                 break;
 570         case EM_GETHANDLE:
 571                 DPRINTF_EDIT_MSG32("EM_GETHANDLE");
 572                 result = (LRESULT)EDIT_EM_GetHandle(es);
 573                 break;
 574
 575         case EM_GETTHUMB16:
 576                 DPRINTF_EDIT_MSG16("EM_GETTHUMB");
 577                 /* fall through */
 578         case EM_GETTHUMB:
 579                 DPRINTF_EDIT_MSG32("EM_GETTHUMB");
 580                 result = EDIT_EM_GetThumb(wnd, es);
 581                 break;
 582
 583         /* messages 0x00bf and 0x00c0 missing from specs */
 584
 585         case WM_USER+15:
 586                 DPRINTF_EDIT_MSG16("undocumented WM_USER+15, please report");
 587                 /* fall through */
 588         case 0x00bf:
 589                 DPRINTF_EDIT_MSG32("undocumented 0x00bf, please report");
 590                 if(unicode)
 591                     result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
 592                 else
 593                     result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
 594                 break;
 595
 596         case WM_USER+16:
 597                 DPRINTF_EDIT_MSG16("undocumented WM_USER+16, please report");
 598                 /* fall through */
 599         case 0x00c0:
 600                 DPRINTF_EDIT_MSG32("undocumented 0x00c0, please report");
 601                 if(unicode)
 602                     result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
 603                 else
 604                     result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
 605                 break;
 606
 607         case EM_LINELENGTH16:
 608                 DPRINTF_EDIT_MSG16("EM_LINELENGTH");
 609                 /* fall through */
 610         case EM_LINELENGTH:
 611                 DPRINTF_EDIT_MSG32("EM_LINELENGTH");
 612                 result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
 613                 break;
 614
 615         case EM_REPLACESEL16:
 616                 DPRINTF_EDIT_MSG16("EM_REPLACESEL");
 617                 lParam = (LPARAM)MapSL(lParam);
 618                 /* fall through */
 619         case EM_REPLACESEL:
 620         {
 621                 LPWSTR textW;
 622                 DPRINTF_EDIT_MSG32("EM_REPLACESEL");
 623
 624                 if(unicode)
 625                     textW = (LPWSTR)lParam;
 626                 else
 627                 {
 628                     LPSTR textA = (LPSTR)lParam;
 629                     INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
 630                     if((textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
 631                         MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
 632                 }
 633
 634                 EDIT_EM_ReplaceSel(wnd, es, (BOOL)wParam, textW, TRUE);
 635                 if (es->flags & EF_UPDATE) {
 636                         es->flags &= ~EF_UPDATE;
 637                         EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
 638                 }
 639                 result = 1;
 640
 641                 if(!unicode)
 642                     HeapFree(GetProcessHeap(), 0, textW);
 643                 break;
 644         }
 645         /* message 0x00c3 missing from specs */
 646
 647         case WM_USER+19:
 648                 DPRINTF_EDIT_MSG16("undocumented WM_USER+19, please report");
 649                 /* fall through */
 650         case 0x00c3:
 651                 DPRINTF_EDIT_MSG32("undocumented 0x00c3, please report");
 652                 if(unicode)
 653                     result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
 654                 else
 655                     result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
 656                 break;
 657
 658         case EM_GETLINE16:
 659                 DPRINTF_EDIT_MSG16("EM_GETLINE");
 660                 lParam = (LPARAM)MapSL(lParam);
 661                 /* fall through */
 662         case EM_GETLINE:
 663                 DPRINTF_EDIT_MSG32("EM_GETLINE");
 664                 result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, lParam, unicode);
 665                 break;
 666
 667         case EM_LIMITTEXT16:
 668                 DPRINTF_EDIT_MSG16("EM_LIMITTEXT");
 669                 /* fall through */
 670         case EM_SETLIMITTEXT:
 671                 DPRINTF_EDIT_MSG32("EM_SETLIMITTEXT");
 672                 EDIT_EM_SetLimitText(es, (INT)wParam);
 673                 break;
 674
 675         case EM_CANUNDO16:
 676                 DPRINTF_EDIT_MSG16("EM_CANUNDO");
 677                 /* fall through */
 678         case EM_CANUNDO:
 679                 DPRINTF_EDIT_MSG32("EM_CANUNDO");
 680                 result = (LRESULT)EDIT_EM_CanUndo(es);
 681                 break;
 682
 683         case EM_UNDO16:
 684                 DPRINTF_EDIT_MSG16("EM_UNDO");
 685                 /* fall through */
 686         case EM_UNDO:
 687                 /* fall through */
 688         case WM_UNDO:
 689                 DPRINTF_EDIT_MSG32("EM_UNDO / WM_UNDO");
 690                 result = (LRESULT)EDIT_EM_Undo(wnd, es);
 691                 break;
 692
 693         case EM_FMTLINES16:
 694                 DPRINTF_EDIT_MSG16("EM_FMTLINES");
 695                 /* fall through */
 696         case EM_FMTLINES:
 697                 DPRINTF_EDIT_MSG32("EM_FMTLINES");
 698                 result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
 699                 break;
 700
 701         case EM_LINEFROMCHAR16:
 702                 DPRINTF_EDIT_MSG16("EM_LINEFROMCHAR");
 703                 /* fall through */
 704         case EM_LINEFROMCHAR:
 705                 DPRINTF_EDIT_MSG32("EM_LINEFROMCHAR");
 706                 result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
 707                 break;
 708
 709         /* message 0x00ca missing from specs */
 710
 711         case WM_USER+26:
 712                 DPRINTF_EDIT_MSG16("undocumented WM_USER+26, please report");
 713                 /* fall through */
 714         case 0x00ca:
 715                 DPRINTF_EDIT_MSG32("undocumented 0x00ca, please report");
 716                 if(unicode)
 717                     result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
 718                 else
 719                     result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
 720                 break;
 721
 722         case EM_SETTABSTOPS16:
 723                 DPRINTF_EDIT_MSG16("EM_SETTABSTOPS");
 724                 result = (LRESULT)EDIT_EM_SetTabStops16(es, (INT)wParam, MapSL(lParam));
 725                 break;
 726         case EM_SETTABSTOPS:
 727                 DPRINTF_EDIT_MSG32("EM_SETTABSTOPS");
 728                 result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
 729                 break;
 730
 731         case EM_SETPASSWORDCHAR16:
 732                 DPRINTF_EDIT_MSG16("EM_SETPASSWORDCHAR");
 733                 /* fall through */
 734         case EM_SETPASSWORDCHAR:
 735         {
 736                 WCHAR charW = 0;
 737                 DPRINTF_EDIT_MSG32("EM_SETPASSWORDCHAR");
 738
 739                 if(unicode)
 740                     charW = (WCHAR)wParam;
 741                 else
 742                 {
 743                     CHAR charA = wParam;
 744                     MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
 745                 }
 746
 747                 EDIT_EM_SetPasswordChar(wnd, es, charW);
 748                 break;
 749         }
 750
 751         case EM_EMPTYUNDOBUFFER16:
 752                 DPRINTF_EDIT_MSG16("EM_EMPTYUNDOBUFFER");
 753                 /* fall through */
 754         case EM_EMPTYUNDOBUFFER:
 755                 DPRINTF_EDIT_MSG32("EM_EMPTYUNDOBUFFER");
 756                 EDIT_EM_EmptyUndoBuffer(es);
 757                 break;
 758
 759         case EM_GETFIRSTVISIBLELINE16:
 760                 DPRINTF_EDIT_MSG16("EM_GETFIRSTVISIBLELINE");
 761                 result = es->y_offset;
 762                 break;
 763         case EM_GETFIRSTVISIBLELINE:
 764                 DPRINTF_EDIT_MSG32("EM_GETFIRSTVISIBLELINE");
 765                 result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
 766                 break;
 767
 768         case EM_SETREADONLY16:
 769                 DPRINTF_EDIT_MSG16("EM_SETREADONLY");
 770                 /* fall through */
 771         case EM_SETREADONLY:
 772                 DPRINTF_EDIT_MSG32("EM_SETREADONLY");
 773                 if (wParam) {
 774                         wnd->dwStyle |= ES_READONLY;
 775                         es->style |= ES_READONLY;
 776                 } else {
 777                         wnd->dwStyle &= ~ES_READONLY;
 778                         es->style &= ~ES_READONLY;
 779                 }
 780                 result = 1;
 781                 break;
 782
 783         case EM_SETWORDBREAKPROC16:
 784                 DPRINTF_EDIT_MSG16("EM_SETWORDBREAKPROC");
 785                 EDIT_EM_SetWordBreakProc16(wnd, es, (EDITWORDBREAKPROC16)lParam);
 786                 break;
 787         case EM_SETWORDBREAKPROC:
 788                 DPRINTF_EDIT_MSG32("EM_SETWORDBREAKPROC");
 789                 EDIT_EM_SetWordBreakProc(wnd, es, lParam);
 790                 break;
 791
 792         case EM_GETWORDBREAKPROC16:
 793                 DPRINTF_EDIT_MSG16("EM_GETWORDBREAKPROC");
 794                 result = (LRESULT)es->word_break_proc16;
 795                 break;
 796         case EM_GETWORDBREAKPROC:
 797                 DPRINTF_EDIT_MSG32("EM_GETWORDBREAKPROC");
 798                 result = (LRESULT)es->word_break_proc;
 799                 break;
 800
 801         case EM_GETPASSWORDCHAR16:
 802                 DPRINTF_EDIT_MSG16("EM_GETPASSWORDCHAR");
 803                 /* fall through */
 804         case EM_GETPASSWORDCHAR:
 805         {
 806                 DPRINTF_EDIT_MSG32("EM_GETPASSWORDCHAR");
 807
 808                 if(unicode)
 809                     result = es->password_char;
 810                 else
 811                 {
 812                     WCHAR charW = es->password_char;
 813                     CHAR charA = 0;
 814                     WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
 815                     result = charA;
 816                 }
 817                 break;
 818         }
 819
 820         /* The following EM_xxx are new to win95 and don't exist for 16 bit */
 821
 822         case EM_SETMARGINS:
 823                 DPRINTF_EDIT_MSG32("EM_SETMARGINS");
 824                 EDIT_EM_SetMargins(es, (INT)wParam, SLOWORD(lParam), SHIWORD(lParam));
 825                 break;
 826
 827         case EM_GETMARGINS:
 828                 DPRINTF_EDIT_MSG32("EM_GETMARGINS");
 829                 result = MAKELONG(es->left_margin, es->right_margin);
 830                 break;
 831
 832         case EM_GETLIMITTEXT:
 833                 DPRINTF_EDIT_MSG32("EM_GETLIMITTEXT");
 834                 result = es->buffer_limit;
 835                 break;
 836
 837         case EM_POSFROMCHAR:
 838                 DPRINTF_EDIT_MSG32("EM_POSFROMCHAR");
 839                 result = EDIT_EM_PosFromChar(wnd, es, (INT)wParam, FALSE);
 840                 break;
 841
 842         case EM_CHARFROMPOS:
 843                 DPRINTF_EDIT_MSG32("EM_CHARFROMPOS");
 844                 result = EDIT_EM_CharFromPos(wnd, es, SLOWORD(lParam), SHIWORD(lParam));
 845                 break;
 846
 847         case WM_GETDLGCODE:
 848                 DPRINTF_EDIT_MSG32("WM_GETDLGCODE");
 849                 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
 850
 851                 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
 852                 {
 853                    int vk = (int)((LPMSG)lParam)->wParam;
 854
 855                    if ((wnd->dwStyle & ES_WANTRETURN) && vk == VK_RETURN)
 856                    {
 857                       result |= DLGC_WANTMESSAGE;
 858                    }
 859                    else if (es->hwndListBox && (vk == VK_RETURN || vk == VK_ESCAPE))
 860                    {
 861                       if (SendMessageW(wnd->parent->hwndSelf, CB_GETDROPPEDSTATE, 0, 0))
 862                          result |= DLGC_WANTMESSAGE;
 863                    }
 864                 }
 865                 break;
 866
 867         case WM_CHAR:
 868         {
 869                 WCHAR charW;
 870                 DPRINTF_EDIT_MSG32("WM_CHAR");
 871
 872                 if(unicode)
 873                     charW = wParam;
 874                 else
 875                 {
 876                     CHAR charA = wParam;
 877                     MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
 878                 }
 879
 880                 if ((charW == VK_RETURN || charW == VK_ESCAPE) && es->hwndListBox)
 881                 {
 882                    if (SendMessageW(wnd->parent->hwndSelf, CB_GETDROPPEDSTATE, 0, 0))
 883                       SendMessageW(wnd->parent->hwndSelf, WM_KEYDOWN, charW, 0);
 884                    break;
 885                 }
 886                 EDIT_WM_Char(wnd, es, charW);
 887                 break;
 888         }
 889
 890         case WM_CLEAR:
 891                 DPRINTF_EDIT_MSG32("WM_CLEAR");
 892                 EDIT_WM_Clear(wnd, es);
 893                 break;
 894
 895         case WM_COMMAND:
 896                 DPRINTF_EDIT_MSG32("WM_COMMAND");
 897                 EDIT_WM_Command(wnd, es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
 898                 break;
 899
 900         case WM_CONTEXTMENU:
 901                 DPRINTF_EDIT_MSG32("WM_CONTEXTMENU");
 902                 EDIT_WM_ContextMenu(wnd, es, SLOWORD(lParam), SHIWORD(lParam));
 903                 break;
 904
 905         case WM_COPY:
 906                 DPRINTF_EDIT_MSG32("WM_COPY");
 907                 EDIT_WM_Copy(wnd, es);
 908                 break;
 909
 910         case WM_CREATE:
 911                 DPRINTF_EDIT_MSG32("WM_CREATE");
 912                 if(unicode)
 913                     result = EDIT_WM_Create(wnd, es, ((LPCREATESTRUCTW)lParam)->lpszName);
 914                 else
 915                 {
 916                     LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
 917                     LPWSTR nameW = NULL;
 918                     if(nameA)
 919                     {
 920                         INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
 921                         if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
 922                             MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
 923                     }
 924                     result = EDIT_WM_Create(wnd, es, nameW);
 925                     if(nameW)
 926                         HeapFree(GetProcessHeap(), 0, nameW);
 927                 }
 928                 break;
 929
 930         case WM_CUT:
 931                 DPRINTF_EDIT_MSG32("WM_CUT");
 932                 EDIT_WM_Cut(wnd, es);
 933                 break;
 934
 935         case WM_ENABLE:
 936                 DPRINTF_EDIT_MSG32("WM_ENABLE");
 937                 es->bEnableState = (BOOL) wParam;
 938                 EDIT_UpdateText(wnd, NULL, TRUE);
 939                 break;
 940
 941         case WM_ERASEBKGND:
 942                 DPRINTF_EDIT_MSG32("WM_ERASEBKGND");
 943                 result = EDIT_WM_EraseBkGnd(wnd, es, (HDC)wParam);
 944                 break;
 945
 946         case WM_GETFONT:
 947                 DPRINTF_EDIT_MSG32("WM_GETFONT");
 948                 result = (LRESULT)es->font;
 949                 break;
 950
 951         case WM_GETTEXT:
 952                 DPRINTF_EDIT_MSG32("WM_GETTEXT");
 953                 result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, lParam, unicode);
 954                 break;
 955
 956         case WM_GETTEXTLENGTH:
 957                 DPRINTF_EDIT_MSG32("WM_GETTEXTLENGTH");
 958                 result = strlenW(es->text);
 959                 break;
 960
 961         case WM_HSCROLL:
 962                 DPRINTF_EDIT_MSG32("WM_HSCROLL");
 963                 result = EDIT_WM_HScroll(wnd, es, LOWORD(wParam), SHIWORD(wParam));
 964                 break;
 965
 966         case WM_KEYDOWN:
 967                 DPRINTF_EDIT_MSG32("WM_KEYDOWN");
 968                 result = EDIT_WM_KeyDown(wnd, es, (INT)wParam);
 969                 break;
 970
 971         case WM_KILLFOCUS:
 972                 DPRINTF_EDIT_MSG32("WM_KILLFOCUS");
 973                 result = EDIT_WM_KillFocus(wnd, es);
 974                 break;
 975
 976         case WM_LBUTTONDBLCLK:
 977                 DPRINTF_EDIT_MSG32("WM_LBUTTONDBLCLK");
 978                 result = EDIT_WM_LButtonDblClk(wnd, es);
 979                 break;
 980
 981         case WM_LBUTTONDOWN:
 982                 DPRINTF_EDIT_MSG32("WM_LBUTTONDOWN");
 983                 result = EDIT_WM_LButtonDown(wnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
 984                 break;
 985
 986         case WM_LBUTTONUP:
 987                 DPRINTF_EDIT_MSG32("WM_LBUTTONUP");
 988                 result = EDIT_WM_LButtonUp(wnd->hwndSelf, es);
 989                 break;
 990
 991         case WM_MBUTTONDOWN:
 992                 DPRINTF_EDIT_MSG32("WM_MBUTTONDOWN");
 993                 result = EDIT_WM_MButtonDown(wnd);
 994                 break;
 995
 996         case WM_MOUSEACTIVATE:
 997                 /*
 998                  *      FIXME: maybe DefWindowProc() screws up, but it seems that
 999                  *              modeless dialog boxes need this.  If we don't do this, the focus
1000                  *              will _not_ be set by DefWindowProc() for edit controls in a
1001                  *              modeless dialog box ???
1002                  */
1003                 DPRINTF_EDIT_MSG32("WM_MOUSEACTIVATE");
1004                 SetFocus(wnd->hwndSelf);
1005                 result = MA_ACTIVATE;
1006                 break;
1007
1008         case WM_MOUSEMOVE:
1009                 /*
1010                  *      DPRINTF_EDIT_MSG32("WM_MOUSEMOVE");
1011                  */
1012                 result = EDIT_WM_MouseMove(wnd, es, SLOWORD(lParam), SHIWORD(lParam));
1013                 break;
1014
1015         case WM_PAINT:
1016                 DPRINTF_EDIT_MSG32("WM_PAINT");
1017                 EDIT_WM_Paint(wnd, es, wParam);
1018                 break;
1019
1020         case WM_PASTE:
1021                 DPRINTF_EDIT_MSG32("WM_PASTE");
1022                 EDIT_WM_Paste(wnd, es);
1023                 break;
1024
1025         case WM_SETFOCUS:
1026                 DPRINTF_EDIT_MSG32("WM_SETFOCUS");
1027                 EDIT_WM_SetFocus(wnd, es);
1028                 break;
1029
1030         case WM_SETFONT:
1031                 DPRINTF_EDIT_MSG32("WM_SETFONT");
1032                 EDIT_WM_SetFont(wnd, es, (HFONT)wParam, LOWORD(lParam) != 0);
1033                 break;
1034
1035         case WM_SETREDRAW:
1036                 /* FIXME: actually set an internal flag and behave accordingly */
1037                 break;
1038
1039         case WM_SETTEXT:
1040                 DPRINTF_EDIT_MSG32("WM_SETTEXT");
1041                 EDIT_WM_SetText(wnd, es, lParam, unicode);
1042                 result = TRUE;
1043                 break;
1044
1045         case WM_SIZE:
1046                 DPRINTF_EDIT_MSG32("WM_SIZE");
1047                 EDIT_WM_Size(wnd, es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
1048                 break;
1049
1050         case WM_SYSKEYDOWN:
1051                 DPRINTF_EDIT_MSG32("WM_SYSKEYDOWN");
1052                 result = EDIT_WM_SysKeyDown(wnd, es, (INT)wParam, (DWORD)lParam);
1053                 break;
1054
1055         case WM_TIMER:
1056                 DPRINTF_EDIT_MSG32("WM_TIMER");
1057                 EDIT_WM_Timer(wnd, es);
1058                 break;
1059
1060         case WM_VSCROLL:
1061                 DPRINTF_EDIT_MSG32("WM_VSCROLL");
1062                 result = EDIT_WM_VScroll(wnd, es, LOWORD(wParam), SHIWORD(wParam));
1063                 break;
1064
1065         case WM_MOUSEWHEEL:
1066                 {
1067                     int gcWheelDelta = 0;
1068                     UINT pulScrollLines = 3;
1069                     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1070
1071                     if (wParam & (MK_SHIFT | MK_CONTROL)) {
1072                         if(unicode)
1073                             result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
1074                         else
1075                             result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
1076                         break;
1077                     }
1078                     gcWheelDelta -= SHIWORD(wParam);
1079                     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1080                     {
1081                         int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
1082                         cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
1083                         result = EDIT_EM_LineScroll(wnd, es, 0, cLineScroll);
1084                     }
1085                 }
1086                 break;
1087         default:
1088                 if(unicode)
1089                     result = DefWindowProcW(wnd->hwndSelf, msg, wParam, lParam);
1090                 else
1091                     result = DefWindowProcA(wnd->hwndSelf, msg, wParam, lParam);
1092                 break;
1093         }
1094         EDIT_UnlockBuffer(wnd, es, FALSE);
1095     END:
1096         return result;
1097 }
1098
1099 /*********************************************************************
1100  *
1101  *      EditWndProcW   (USER32.@)
1102  */
1103 LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1104 {
1105     LRESULT res;
1106     WND *wndPtr = WIN_FindWndPtr(hWnd);
1107
1108     res = EditWndProc_locked(wndPtr, uMsg, wParam, lParam, TRUE);
1109
1110     WIN_ReleaseWndPtr(wndPtr);
1111     return res;
1112 }
1113
1114 /*********************************************************************
1115  *
1116  *      EditWndProcA   (USER32.@)
1117  */
1118 LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1119 {
1120     LRESULT res;
1121     WND *wndPtr = WIN_FindWndPtr(hWnd);
1122
1123     res = EditWndProc_locked(wndPtr, uMsg, wParam, lParam, FALSE);
1124
1125     WIN_ReleaseWndPtr(wndPtr);
1126     return res;
1127 }
1128
1129 /*********************************************************************
1130  *
1131  *      EDIT_BuildLineDefs_ML
1132  *
1133  *      Build linked list of text lines.
1134  *      Lines can end with '\0' (last line), a character (if it is wrapped),
1135  *      a soft return '\r\r\n' or a hard return '\r\n'
1136  *
1137  */
1138 static void EDIT_BuildLineDefs_ML(WND *wnd, EDITSTATE *es)
1139 {
1140         HDC dc;
1141         HFONT old_font = 0;
1142         LPWSTR start, cp;
1143         INT fw;
1144         LINEDEF *current_def;
1145         LINEDEF **previous_next;
1146
1147         current_def = es->first_line_def;
1148         do {
1149                 LINEDEF *next_def = current_def->next;
1150                 HeapFree(GetProcessHeap(), 0, current_def);
1151                 current_def = next_def;
1152         } while (current_def);
1153         es->line_count = 0;
1154         es->text_width = 0;
1155
1156         dc = GetDC(wnd->hwndSelf);
1157         if (es->font)
1158                 old_font = SelectObject(dc, es->font);
1159
1160         fw = es->format_rect.right - es->format_rect.left;
1161         start = es->text;
1162         previous_next = &es->first_line_def;
1163         do {
1164                 current_def = HeapAlloc(GetProcessHeap(), 0, sizeof(LINEDEF));
1165                 current_def->next = NULL;
1166                 cp = start;
1167                 while (*cp) {
1168                         if ((*cp == '\r') && (*(cp + 1) == '\n'))
1169                                 break;
1170                         cp++;
1171                 }
1172                 if (!(*cp)) {
1173                         current_def->ending = END_0;
1174                         current_def->net_length = strlenW(start);
1175                 } else if ((cp > start) && (*(cp - 1) == '\r')) {
1176                         current_def->ending = END_SOFT;
1177                         current_def->net_length = cp - start - 1;
1178                 } else {
1179                         current_def->ending = END_HARD;
1180                         current_def->net_length = cp - start;
1181                 }
1182                 current_def->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1183                                         start, current_def->net_length,
1184                                         es->tabs_count, es->tabs));
1185                 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
1186                 if ((!(es->style & ES_AUTOHSCROLL)) && (current_def->width > fw)) {
1187                         INT next = 0;
1188                         INT prev;
1189                         do {
1190                                 prev = next;
1191                                 next = EDIT_CallWordBreakProc(es, start - es->text,
1192                                                 prev + 1, current_def->net_length, WB_RIGHT);
1193                                 current_def->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1194                                                         start, next, es->tabs_count, es->tabs));
1195                         } while (current_def->width <= fw);
1196                         if (!prev) {
1197                                 next = 0;
1198                                 do {
1199                                         prev = next;
1200                                         next++;
1201                                         current_def->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
1202                                                                 start, next, es->tabs_count, es->tabs));
1203                                 } while (current_def->width <= fw);
1204                                 if (!prev)
1205                                         prev = 1;
1206                         }
1207                         current_def->net_length = prev;
1208                         current_def->ending = END_WRAP;
1209                         current_def->width = (INT)LOWORD(GetTabbedTextExtentW(dc, start,
1210                                                 current_def->net_length, es->tabs_count, es->tabs));
1211                 }
1212                 switch (current_def->ending) {
1213                 case END_SOFT:
1214                         current_def->length = current_def->net_length + 3;
1215                         break;
1216                 case END_HARD:
1217                         current_def->length = current_def->net_length + 2;
1218                         break;
1219                 case END_WRAP:
1220                 case END_0:
1221                         current_def->length = current_def->net_length;
1222                         break;
1223                 }
1224                 es->text_width = max(es->text_width, current_def->width);
1225                 start += current_def->length;
1226                 *previous_next = current_def;
1227                 previous_next = &current_def->next;
1228                 es->line_count++;
1229         } while (current_def->ending != END_0);
1230         if (es->font)
1231                 SelectObject(dc, old_font);
1232         ReleaseDC(wnd->hwndSelf, dc);
1233 }
1234
1235 /*********************************************************************
1236  *
1237  *      EDIT_CalcLineWidth_SL
1238  *
1239  */
1240 static void EDIT_CalcLineWidth_SL(WND *wnd, EDITSTATE *es)
1241 {
1242     es->text_width = SLOWORD(EDIT_EM_PosFromChar(wnd, es, strlenW(es->text), FALSE));
1243 }
1244
1245 /*********************************************************************
1246  *
1247  *      EDIT_CallWordBreakProc
1248  *
1249  *      Call appropriate WordBreakProc (internal or external).
1250  *
1251  *      Note: The "start" argument should always be an index refering
1252  *              to es->text.  The actual wordbreak proc might be
1253  *              16 bit, so we can't always pass any 32 bit LPSTR.
1254  *              Hence we assume that es->text is the buffer that holds
1255  *              the string under examination (we can decide this for ourselves).
1256  *
1257  */
1258 /* ### start build ### */
1259 extern WORD CALLBACK EDIT_CallTo16_word_lwww(EDITWORDBREAKPROC16,SEGPTR,WORD,WORD,WORD);
1260 /* ### stop build ### */
1261 static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
1262 {
1263     INT ret, iWndsLocks;
1264
1265     /* To avoid any deadlocks, all the locks on the windows structures
1266        must be suspended before the control is passed to the application */
1267     iWndsLocks = WIN_SuspendWndsLock();
1268
1269         if (es->word_break_proc16) {
1270             HGLOBAL16 hglob16;
1271             SEGPTR segptr;
1272             INT countA;
1273
1274             countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
1275             hglob16 = GlobalAlloc16(GMEM_MOVEABLE | GMEM_ZEROINIT, countA);
1276             segptr = K32WOWGlobalLock16(hglob16);
1277             WideCharToMultiByte(CP_ACP, 0, es->text + start, count, MapSL(segptr), countA, NULL, NULL);
1278             ret = (INT)EDIT_CallTo16_word_lwww(es->word_break_proc16,
1279                                                 segptr, index, countA, action);
1280             GlobalUnlock16(hglob16);
1281             GlobalFree16(hglob16);
1282         }
1283         else if (es->word_break_proc)
1284         {
1285             if(es->is_unicode)
1286             {
1287                 EDITWORDBREAKPROCW wbpW = (EDITWORDBREAKPROCW)es->word_break_proc;
1288
1289                 TRACE_(relay)("(UNICODE wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
1290                         es->word_break_proc, debugstr_wn(es->text + start, count), index, count, action);
1291                 ret = wbpW(es->text + start, index, count, action);
1292             }
1293             else
1294             {
1295                 EDITWORDBREAKPROCA wbpA = (EDITWORDBREAKPROCA)es->word_break_proc;
1296                 INT countA;
1297                 CHAR *textA;
1298
1299                 countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
1300                 textA = HeapAlloc(GetProcessHeap(), 0, countA);
1301                 WideCharToMultiByte(CP_ACP, 0, es->text + start, count, textA, countA, NULL, NULL);
1302                 TRACE_(relay)("(ANSI wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
1303                         es->word_break_proc, debugstr_an(textA, countA), index, countA, action);
1304                 ret = wbpA(textA, index, countA, action);
1305                 HeapFree(GetProcessHeap(), 0, textA);
1306             }
1307         }
1308         else
1309             ret = EDIT_WordBreakProc(es->text + start, index, count, action);
1310
1311     WIN_RestoreWndsLock(iWndsLocks);
1312     return ret;
1313 }
1314
1315
1316 /*********************************************************************
1317  *
1318  *      EDIT_CharFromPos
1319  *
1320  *      Beware: This is not the function called on EM_CHARFROMPOS
1321  *              The position _can_ be outside the formatting / client
1322  *              rectangle
1323  *              The return value is only the character index
1324  *
1325  */
1326 static INT EDIT_CharFromPos(WND *wnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
1327 {
1328         INT index;
1329         HDC dc;
1330         HFONT old_font = 0;
1331
1332         if (es->style & ES_MULTILINE) {
1333                 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
1334                 INT line_index = 0;
1335                 LINEDEF *line_def = es->first_line_def;
1336                 INT low, high;
1337                 while ((line > 0) && line_def->next) {
1338                         line_index += line_def->length;
1339                         line_def = line_def->next;
1340                         line--;
1341                 }
1342                 x += es->x_offset - es->format_rect.left;
1343                 if (x >= line_def->width) {
1344                         if (after_wrap)
1345                                 *after_wrap = (line_def->ending == END_WRAP);
1346                         return line_index + line_def->net_length;
1347                 }
1348                 if (x <= 0) {
1349                         if (after_wrap)
1350                                 *after_wrap = FALSE;
1351                         return line_index;
1352                 }
1353                 dc = GetDC(wnd->hwndSelf);
1354                 if (es->font)
1355                         old_font = SelectObject(dc, es->font);
1356                     low = line_index + 1;
1357                     high = line_index + line_def->net_length + 1;
1358                     while (low < high - 1)
1359                     {
1360                         INT mid = (low + high) / 2;
1361                         if (LOWORD(GetTabbedTextExtentW(dc, es->text + line_index,mid - line_index, es->tabs_count, es->tabs)) > x) high = mid;
1362                         else low = mid;
1363                     }
1364                     index = low;
1365
1366                 if (after_wrap)
1367                         *after_wrap = ((index == line_index + line_def->net_length) &&
1368                                                         (line_def->ending == END_WRAP));
1369         } else {
1370                 LPWSTR text;
1371                 SIZE size;
1372                 if (after_wrap)
1373                         *after_wrap = FALSE;
1374                 x -= es->format_rect.left;
1375                 if (!x)
1376                         return es->x_offset;
1377                 text = EDIT_GetPasswordPointer_SL(es);
1378                 dc = GetDC(wnd->hwndSelf);
1379                 if (es->font)
1380                         old_font = SelectObject(dc, es->font);
1381                 if (x < 0)
1382                 {
1383                     INT low = 0;
1384                     INT high = es->x_offset;
1385                     while (low < high - 1)
1386                     {
1387                         INT mid = (low + high) / 2;
1388                         GetTextExtentPoint32W( dc, text + mid,
1389                                                es->x_offset - mid, &size );
1390                         if (size.cx > -x) low = mid;
1391                         else high = mid;
1392                     }
1393                     index = low;
1394                 }
1395                 else
1396                 {
1397                     INT low = es->x_offset;
1398                     INT high = strlenW(es->text) + 1;
1399                     while (low < high - 1)
1400                     {
1401                         INT mid = (low + high) / 2;
1402                         GetTextExtentPoint32W( dc, text + es->x_offset,
1403                                                mid - es->x_offset, &size );
1404                         if (size.cx > x) high = mid;
1405                         else low = mid;
1406                     }
1407                     index = low;
1408                 }
1409                 if (es->style & ES_PASSWORD)
1410                         HeapFree(GetProcessHeap(), 0, text);
1411         }
1412         if (es->font)
1413                 SelectObject(dc, old_font);
1414         ReleaseDC(wnd->hwndSelf, dc);
1415         return index;
1416 }
1417
1418
1419 /*********************************************************************
1420  *
1421  *      EDIT_ConfinePoint
1422  *
1423  *      adjusts the point to be within the formatting rectangle
1424  *      (so CharFromPos returns the nearest _visible_ character)
1425  *
1426  */
1427 static void EDIT_ConfinePoint(EDITSTATE *es, LPINT x, LPINT y)
1428 {
1429         *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
1430         *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
1431 }
1432
1433
1434 /*********************************************************************
1435  *
1436  *      EDIT_GetLineRect
1437  *
1438  *      Calculates the bounding rectangle for a line from a starting
1439  *      column to an ending column.
1440  *
1441  */
1442 static void EDIT_GetLineRect(WND *wnd, EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1443 {
1444         INT line_index =  EDIT_EM_LineIndex(es, line);
1445
1446         if (es->style & ES_MULTILINE)
1447                 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1448         else
1449                 rc->top = es->format_rect.top;
1450         rc->bottom = rc->top + es->line_height;
1451         rc->left = (scol == 0) ? es->format_rect.left : SLOWORD(EDIT_EM_PosFromChar(wnd, es, line_index + scol, TRUE));
1452         rc->right = (ecol == -1) ? es->format_rect.right : SLOWORD(EDIT_EM_PosFromChar(wnd, es, line_index + ecol, TRUE));
1453 }
1454
1455
1456 /*********************************************************************
1457  *
1458  *      EDIT_GetPasswordPointer_SL
1459  *
1460  *      note: caller should free the (optionally) allocated buffer
1461  *
1462  */
1463 static LPWSTR EDIT_GetPasswordPointer_SL(EDITSTATE *es)
1464 {
1465         if (es->style & ES_PASSWORD) {
1466                 INT len = strlenW(es->text);
1467                 LPWSTR text = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
1468                 text[len] = '\0';
1469                 while(len) text[--len] = es->password_char;
1470                 return text;
1471         } else
1472                 return es->text;
1473 }
1474
1475
1476 /*********************************************************************
1477  *
1478  *      EDIT_LockBuffer
1479  *
1480  *      This acts as a LOCAL_Lock(), but it locks only once.  This way
1481  *      you can call it whenever you like, without unlocking.
1482  *
1483  */
1484 static void EDIT_LockBuffer(WND *wnd, EDITSTATE *es)
1485 {
1486         if (!es) {
1487                 ERR("no EDITSTATE ... please report\n");
1488                 return;
1489         }
1490         if (!es->text) {
1491             CHAR *textA = NULL;
1492             UINT countA = 0;
1493             BOOL _16bit = FALSE;
1494
1495             if(es->hloc32W)
1496             {
1497                 if(es->hloc32A)
1498                 {
1499                     TRACE("Synchronizing with 32-bit ANSI buffer\n");
1500                     textA = LocalLock(es->hloc32A);
1501                     countA = strlen(textA) + 1;
1502                 }
1503                 else if(es->hloc16)
1504                 {
1505                     TRACE("Synchronizing with 16-bit ANSI buffer\n");
1506                     textA = LOCAL_Lock(wnd->hInstance, es->hloc16);
1507                     countA = strlen(textA) + 1;
1508                     _16bit = TRUE;
1509                 }
1510             }
1511             else {
1512                 ERR("no buffer ... please report\n");
1513                 return;
1514             }
1515
1516             if(textA)
1517             {
1518                 HLOCAL hloc32W_new;
1519                 UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
1520                 TRACE("%d bytes translated to %d WCHARs\n", countA, countW_new);
1521                 if(countW_new > es->buffer_size + 1)
1522                 {
1523                     UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
1524                     TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
1525                     hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
1526                     if(hloc32W_new)
1527                     {
1528                         es->hloc32W = hloc32W_new;
1529                         es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
1530                         TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
1531                     }
1532                     else
1533                         WARN("FAILED! Will synchronize partially\n");
1534                 }
1535             }
1536
1537             /*TRACE("Locking 32-bit UNICODE buffer\n");*/
1538             es->text = LocalLock(es->hloc32W);
1539
1540             if(textA)
1541             {
1542                 MultiByteToWideChar(CP_ACP, 0, textA, countA, es->text, es->buffer_size + 1);
1543                 if(_16bit)
1544                     LOCAL_Unlock(wnd->hInstance, es->hloc16);
1545                 else
1546                     LocalUnlock(es->hloc32A);
1547             }
1548         }
1549         es->lock_count++;
1550 }
1551
1552
1553 /*********************************************************************
1554  *
1555  *      EDIT_SL_InvalidateText
1556  *
1557  *      Called from EDIT_InvalidateText().
1558  *      Does the job for single-line controls only.
1559  *
1560  */
1561 static void EDIT_SL_InvalidateText(WND *wnd, EDITSTATE *es, INT start, INT end)
1562 {
1563         RECT line_rect;
1564         RECT rc;
1565
1566         EDIT_GetLineRect(wnd, es, 0, start, end, &line_rect);
1567         if (IntersectRect(&rc, &line_rect, &es->format_rect))
1568                 EDIT_UpdateText(wnd, &rc, FALSE);
1569 }
1570
1571
1572 /*********************************************************************
1573  *
1574  *      EDIT_ML_InvalidateText
1575  *
1576  *      Called from EDIT_InvalidateText().
1577  *      Does the job for multi-line controls only.
1578  *
1579  */
1580 static void EDIT_ML_InvalidateText(WND *wnd, EDITSTATE *es, INT start, INT end)
1581 {
1582         INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1583         INT sl = EDIT_EM_LineFromChar(es, start);
1584         INT el = EDIT_EM_LineFromChar(es, end);
1585         INT sc;
1586         INT ec;
1587         RECT rc1;
1588         RECT rcWnd;
1589         RECT rcLine;
1590         RECT rcUpdate;
1591         INT l;
1592
1593         if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1594                 return;
1595
1596         sc = start - EDIT_EM_LineIndex(es, sl);
1597         ec = end - EDIT_EM_LineIndex(es, el);
1598         if (sl < es->y_offset) {
1599                 sl = es->y_offset;
1600                 sc = 0;
1601         }
1602         if (el > es->y_offset + vlc) {
1603                 el = es->y_offset + vlc;
1604                 ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
1605         }
1606         GetClientRect(wnd->hwndSelf, &rc1);
1607         IntersectRect(&rcWnd, &rc1, &es->format_rect);
1608         if (sl == el) {
1609                 EDIT_GetLineRect(wnd, es, sl, sc, ec, &rcLine);
1610                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1611                         EDIT_UpdateText(wnd, &rcUpdate, FALSE);
1612         } else {
1613                 EDIT_GetLineRect(wnd, es, sl, sc,
1614                                 EDIT_EM_LineLength(es,
1615                                         EDIT_EM_LineIndex(es, sl)),
1616                                 &rcLine);
1617                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1618                         EDIT_UpdateText(wnd, &rcUpdate, FALSE);
1619                 for (l = sl + 1 ; l < el ; l++) {
1620                         EDIT_GetLineRect(wnd, es, l, 0,
1621                                 EDIT_EM_LineLength(es,
1622                                         EDIT_EM_LineIndex(es, l)),
1623                                 &rcLine);
1624                         if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1625                                 EDIT_UpdateText(wnd, &rcUpdate, FALSE);
1626                 }
1627                 EDIT_GetLineRect(wnd, es, el, 0, ec, &rcLine);
1628                 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1629                         EDIT_UpdateText(wnd, &rcUpdate, FALSE);
1630         }
1631 }
1632
1633
1634 /*********************************************************************
1635  *
1636  *      EDIT_InvalidateText
1637  *
1638  *      Invalidate the text from offset start upto, but not including,
1639  *      offset end.  Useful for (re)painting the selection.
1640  *      Regions outside the linewidth are not invalidated.
1641  *      end == -1 means end == TextLength.
1642  *      start and end need not be ordered.
1643  *
1644  */
1645 static void EDIT_InvalidateText(WND *wnd, EDITSTATE *es, INT start, INT end)
1646 {
1647         if (end == start)
1648                 return;
1649
1650         if (end == -1)
1651                 end = strlenW(es->text);
1652
1653         ORDER_INT(start, end);
1654
1655         if (es->style & ES_MULTILINE)
1656                 EDIT_ML_InvalidateText(wnd, es, start, end);
1657         else
1658                 EDIT_SL_InvalidateText(wnd, es, start, end);
1659 }
1660
1661
1662 /*********************************************************************
1663  *
1664  *      EDIT_MakeFit
1665  *
1666  *      Try to fit size + 1 characters in the buffer. Constrain to limits.
1667  *
1668  */
1669 static BOOL EDIT_MakeFit(WND *wnd, EDITSTATE *es, UINT size)
1670 {
1671         HLOCAL hNew32W;
1672
1673         if (size <= es->buffer_size)
1674                 return TRUE;
1675         if (size > es->buffer_limit) {
1676                 EDIT_NOTIFY_PARENT(wnd, EN_MAXTEXT, "EN_MAXTEXT");
1677                 return FALSE;
1678         }
1679         if (size > es->buffer_limit)
1680                 size = es->buffer_limit;
1681
1682         TRACE("trying to ReAlloc to %d+1 characters\n", size);
1683
1684         /* Force edit to unlock it's buffer. es->text now NULL */
1685         EDIT_UnlockBuffer(wnd, es, TRUE);
1686
1687         if (es->hloc32W) {
1688             UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1689             if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
1690                 TRACE("Old 32 bit handle %08x, new handle %08x\n", es->hloc32W, hNew32W);
1691                 es->hloc32W = hNew32W;
1692                 es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
1693             }
1694         }
1695
1696         EDIT_LockBuffer(wnd, es);
1697
1698         if (es->buffer_size < size) {
1699                 WARN("FAILED !  We now have %d+1\n", es->buffer_size);
1700                 EDIT_NOTIFY_PARENT(wnd, EN_ERRSPACE, "EN_ERRSPACE");
1701                 return FALSE;
1702         } else {
1703                 TRACE("We now have %d+1\n", es->buffer_size);
1704                 return TRUE;
1705         }
1706 }
1707
1708
1709 /*********************************************************************
1710  *
1711  *      EDIT_MakeUndoFit
1712  *
1713  *      Try to fit size + 1 bytes in the undo buffer.
1714  *
1715  */
1716 static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
1717 {
1718         UINT alloc_size;
1719
1720         if (size <= es->undo_buffer_size)
1721                 return TRUE;
1722
1723         TRACE("trying to ReAlloc to %d+1\n", size);
1724
1725         alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
1726         if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
1727                 es->undo_buffer_size = alloc_size/sizeof(WCHAR);
1728                 return TRUE;
1729         }
1730         else
1731         {
1732                 WARN("FAILED !  We now have %d+1\n", es->undo_buffer_size);
1733                 return FALSE;
1734         }
1735 }
1736
1737
1738 /*********************************************************************
1739  *
1740  *      EDIT_MoveBackward
1741  *
1742  */
1743 static void EDIT_MoveBackward(WND *wnd, EDITSTATE *es, BOOL extend)
1744 {
1745         INT e = es->selection_end;
1746
1747         if (e) {
1748                 e--;
1749                 if ((es->style & ES_MULTILINE) && e &&
1750                                 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1751                         e--;
1752                         if (e && (es->text[e - 1] == '\r'))
1753                                 e--;
1754                 }
1755         }
1756         EDIT_EM_SetSel(wnd, es, extend ? es->selection_start : e, e, FALSE);
1757         EDIT_EM_ScrollCaret(wnd, es);
1758 }
1759
1760
1761 /*********************************************************************
1762  *
1763  *      EDIT_MoveDown_ML
1764  *
1765  *      Only for multi line controls
1766  *      Move the caret one line down, on a column with the nearest
1767  *      x coordinate on the screen (might be a different column).
1768  *
1769  */
1770 static void EDIT_MoveDown_ML(WND *wnd, EDITSTATE *es, BOOL extend)
1771 {
1772         INT s = es->selection_start;
1773         INT e = es->selection_end;
1774         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1775         LRESULT pos = EDIT_EM_PosFromChar(wnd, es, e, after_wrap);
1776         INT x = SLOWORD(pos);
1777         INT y = SHIWORD(pos);
1778
1779         e = EDIT_CharFromPos(wnd, es, x, y + es->line_height, &after_wrap);
1780         if (!extend)
1781                 s = e;
1782         EDIT_EM_SetSel(wnd, es, s, e, after_wrap);
1783         EDIT_EM_ScrollCaret(wnd, es);
1784 }
1785
1786
1787 /*********************************************************************
1788  *
1789  *      EDIT_MoveEnd
1790  *
1791  */
1792 static void EDIT_MoveEnd(WND *wnd, EDITSTATE *es, BOOL extend)
1793 {
1794         BOOL after_wrap = FALSE;
1795         INT e;
1796
1797         /* Pass a high value in x to make sure of receiving the end of the line */
1798         if (es->style & ES_MULTILINE)
1799                 e = EDIT_CharFromPos(wnd, es, 0x3fffffff,
1800                         HIWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1801         else
1802                 e = strlenW(es->text);
1803         EDIT_EM_SetSel(wnd, es, extend ? es->selection_start : e, e, after_wrap);
1804         EDIT_EM_ScrollCaret(wnd, es);
1805 }
1806
1807
1808 /*********************************************************************
1809  *
1810  *      EDIT_MoveForward
1811  *
1812  */
1813 static void EDIT_MoveForward(WND *wnd, EDITSTATE *es, BOOL extend)
1814 {
1815         INT e = es->selection_end;
1816
1817         if (es->text[e]) {
1818                 e++;
1819                 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1820                         if (es->text[e] == '\n')
1821                                 e++;
1822                         else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1823                                 e += 2;
1824                 }
1825         }
1826         EDIT_EM_SetSel(wnd, es, extend ? es->selection_start : e, e, FALSE);
1827         EDIT_EM_ScrollCaret(wnd, es);
1828 }
1829
1830
1831 /*********************************************************************
1832  *
1833  *      EDIT_MoveHome
1834  *
1835  *      Home key: move to beginning of line.
1836  *
1837  */
1838 static void EDIT_MoveHome(WND *wnd, EDITSTATE *es, BOOL extend)
1839 {
1840         INT e;
1841
1842         /* Pass the x_offset in x to make sure of receiving the first position of the line */
1843         if (es->style & ES_MULTILINE)
1844                 e = EDIT_CharFromPos(wnd, es, -es->x_offset,
1845                         HIWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1846         else
1847                 e = 0;
1848         EDIT_EM_SetSel(wnd, es, extend ? es->selection_start : e, e, FALSE);
1849         EDIT_EM_ScrollCaret(wnd, es);
1850 }
1851
1852
1853 /*********************************************************************
1854  *
1855  *      EDIT_MovePageDown_ML
1856  *
1857  *      Only for multi line controls
1858  *      Move the caret one page down, on a column with the nearest
1859  *      x coordinate on the screen (might be a different column).
1860  *
1861  */
1862 static void EDIT_MovePageDown_ML(WND *wnd, EDITSTATE *es, BOOL extend)
1863 {
1864         INT s = es->selection_start;
1865         INT e = es->selection_end;
1866         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1867         LRESULT pos = EDIT_EM_PosFromChar(wnd, es, e, after_wrap);
1868         INT x = SLOWORD(pos);
1869         INT y = SHIWORD(pos);
1870
1871         e = EDIT_CharFromPos(wnd, es, x,
1872                 y + (es->format_rect.bottom - es->format_rect.top),
1873                 &after_wrap);
1874         if (!extend)
1875                 s = e;
1876         EDIT_EM_SetSel(wnd, es, s, e, after_wrap);
1877         EDIT_EM_ScrollCaret(wnd, es);
1878 }
1879
1880
1881 /*********************************************************************
1882  *
1883  *      EDIT_MovePageUp_ML
1884  *
1885  *      Only for multi line controls
1886  *      Move the caret one page up, on a column with the nearest
1887  *      x coordinate on the screen (might be a different column).
1888  *
1889  */
1890 static void EDIT_MovePageUp_ML(WND *wnd, EDITSTATE *es, BOOL extend)
1891 {
1892         INT s = es->selection_start;
1893         INT e = es->selection_end;
1894         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1895         LRESULT pos = EDIT_EM_PosFromChar(wnd, es, e, after_wrap);
1896         INT x = SLOWORD(pos);
1897         INT y = SHIWORD(pos);
1898
1899         e = EDIT_CharFromPos(wnd, es, x,
1900                 y - (es->format_rect.bottom - es->format_rect.top),
1901                 &after_wrap);
1902         if (!extend)
1903                 s = e;
1904         EDIT_EM_SetSel(wnd, es, s, e, after_wrap);
1905         EDIT_EM_ScrollCaret(wnd, es);
1906 }
1907
1908
1909 /*********************************************************************
1910  *
1911  *      EDIT_MoveUp_ML
1912  *
1913  *      Only for multi line controls
1914  *      Move the caret one line up, on a column with the nearest
1915  *      x coordinate on the screen (might be a different column).
1916  *
1917  */
1918 static void EDIT_MoveUp_ML(WND *wnd, EDITSTATE *es, BOOL extend)
1919 {
1920         INT s = es->selection_start;
1921         INT e = es->selection_end;
1922         BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1923         LRESULT pos = EDIT_EM_PosFromChar(wnd, es, e, after_wrap);
1924         INT x = SLOWORD(pos);
1925         INT y = SHIWORD(pos);
1926
1927         e = EDIT_CharFromPos(wnd, es, x, y - es->line_height, &after_wrap);
1928         if (!extend)
1929                 s = e;
1930         EDIT_EM_SetSel(wnd, es, s, e, after_wrap);
1931         EDIT_EM_ScrollCaret(wnd, es);
1932 }
1933
1934
1935 /*********************************************************************
1936  *
1937  *      EDIT_MoveWordBackward
1938  *
1939  */
1940 static void EDIT_MoveWordBackward(WND *wnd, EDITSTATE *es, BOOL extend)
1941 {
1942         INT s = es->selection_start;
1943         INT e = es->selection_end;
1944         INT l;
1945         INT ll;
1946         INT li;
1947
1948         l = EDIT_EM_LineFromChar(es, e);
1949         ll = EDIT_EM_LineLength(es, e);
1950         li = EDIT_EM_LineIndex(es, l);
1951         if (e - li == 0) {
1952                 if (l) {
1953                         li = EDIT_EM_LineIndex(es, l - 1);
1954                         e = li + EDIT_EM_LineLength(es, li);
1955                 }
1956         } else {
1957                 e = li + (INT)EDIT_CallWordBreakProc(es,
1958                                 li, e - li, ll, WB_LEFT);
1959         }
1960         if (!extend)
1961                 s = e;
1962         EDIT_EM_SetSel(wnd, es, s, e, FALSE);
1963         EDIT_EM_ScrollCaret(wnd, es);
1964 }
1965
1966
1967 /*********************************************************************
1968  *
1969  *      EDIT_MoveWordForward
1970  *
1971  */
1972 static void EDIT_MoveWordForward(WND *wnd, EDITSTATE *es, BOOL extend)
1973 {
1974         INT s = es->selection_start;
1975         INT e = es->selection_end;
1976         INT l;
1977         INT ll;
1978         INT li;
1979
1980         l = EDIT_EM_LineFromChar(es, e);
1981         ll = EDIT_EM_LineLength(es, e);
1982         li = EDIT_EM_LineIndex(es, l);
1983         if (e - li == ll) {
1984                 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
1985                         e = EDIT_EM_LineIndex(es, l + 1);
1986         } else {
1987                 e = li + EDIT_CallWordBreakProc(es,
1988                                 li, e - li + 1, ll, WB_RIGHT);
1989         }
1990         if (!extend)
1991                 s = e;
1992         EDIT_EM_SetSel(wnd, es, s, e, FALSE);
1993         EDIT_EM_ScrollCaret(wnd, es);
1994 }
1995
1996
1997 /*********************************************************************
1998  *
1999  *      EDIT_PaintLine
2000  *
2001  */
2002 static void EDIT_PaintLine(WND *wnd, EDITSTATE *es, HDC dc, INT line, BOOL rev)
2003 {
2004         INT s = es->selection_start;
2005         INT e = es->selection_end;
2006         INT li;
2007         INT ll;
2008         INT x;
2009         INT y;
2010         LRESULT pos;
2011
2012         if (es->style & ES_MULTILINE) {
2013                 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2014                 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
2015                         return;
2016         } else if (line)
2017                 return;
2018
2019         TRACE("line=%d\n", line);
2020
2021         pos = EDIT_EM_PosFromChar(wnd, es, EDIT_EM_LineIndex(es, line), FALSE);
2022         x = SLOWORD(pos);
2023         y = SHIWORD(pos);
2024         li = EDIT_EM_LineIndex(es, line);
2025         ll = EDIT_EM_LineLength(es, li);
2026         s = es->selection_start;
2027         e = es->selection_end;
2028         ORDER_INT(s, e);
2029         s = min(li + ll, max(li, s));
2030         e = min(li + ll, max(li, e));
2031         if (rev && (s != e) &&
2032                         ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
2033                 x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
2034                 x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
2035                 x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
2036         } else
2037                 x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
2038 }
2039
2040
2041 /*********************************************************************
2042  *
2043  *      EDIT_PaintText
2044  *
2045  */
2046 static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
2047 {
2048         COLORREF BkColor;
2049         COLORREF TextColor;
2050         INT ret;
2051         INT li;
2052         SIZE size;
2053
2054         if (!count)
2055                 return 0;
2056         BkColor = GetBkColor(dc);
2057         TextColor = GetTextColor(dc);
2058         if (rev) {
2059                 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
2060                 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
2061         }
2062         li = EDIT_EM_LineIndex(es, line);
2063         if (es->style & ES_MULTILINE) {
2064                 ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
2065                                         es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
2066         } else {
2067                 LPWSTR text = EDIT_GetPasswordPointer_SL(es);
2068                 TextOutW(dc, x, y, text + li + col, count);
2069                 GetTextExtentPoint32W(dc, text + li + col, count, &size);
2070                 ret = size.cx;
2071                 if (es->style & ES_PASSWORD)
2072                         HeapFree(GetProcessHeap(), 0, text);
2073         }
2074         if (rev) {
2075                 SetBkColor(dc, BkColor);
2076                 SetTextColor(dc, TextColor);
2077         }
2078         return ret;
2079 }
2080
2081
2082 /*********************************************************************
2083  *
2084  *      EDIT_SetCaretPos
2085  *
2086  */
2087 static void EDIT_SetCaretPos(WND *wnd, EDITSTATE *es, INT pos,
2088                              BOOL after_wrap)
2089 {
2090         LRESULT res = EDIT_EM_PosFromChar(wnd, es, pos, after_wrap);
2091         SetCaretPos(SLOWORD(res), SHIWORD(res));
2092 }
2093
2094
2095 /*********************************************************************
2096  *
2097  *      EDIT_SetRectNP
2098  *
2099  *      note:   this is not (exactly) the handler called on EM_SETRECTNP
2100  *              it is also used to set the rect of a single line control
2101  *
2102  */
2103 static void EDIT_SetRectNP(WND *wnd, EDITSTATE *es, LPRECT rc)
2104 {
2105         CopyRect(&es->format_rect, rc);
2106         if (es->style & WS_BORDER) {
2107                 INT bw = GetSystemMetrics(SM_CXBORDER) + 1;
2108                 if(TWEAK_WineLook == WIN31_LOOK)
2109                         bw += 2;
2110                 es->format_rect.left += bw;
2111                 es->format_rect.top += bw;
2112                 es->format_rect.right -= bw;
2113                 es->format_rect.bottom -= bw;
2114         }
2115         es->format_rect.left += es->left_margin;
2116         es->format_rect.right -= es->right_margin;
2117         es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
2118         if (es->style & ES_MULTILINE)
2119         {
2120             INT fw, vlc, max_x_offset, max_y_offset;
2121
2122             vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2123             es->format_rect.bottom = es->format_rect.top + max(1, vlc) * es->line_height;
2124
2125             /* correct es->x_offset */
2126             fw = es->format_rect.right - es->format_rect.left;
2127             max_x_offset = es->text_width - fw;
2128             if(max_x_offset < 0) max_x_offset = 0;
2129             if(es->x_offset > max_x_offset)
2130                 es->x_offset = max_x_offset;
2131
2132             /* correct es->y_offset */
2133             max_y_offset = es->line_count - vlc;
2134             if(max_y_offset < 0) max_y_offset = 0;
2135             if(es->y_offset > max_y_offset)
2136                 es->y_offset = max_y_offset;
2137
2138             /* force scroll info update */
2139             EDIT_UpdateScrollInfo(wnd, es);
2140         }
2141         else
2142         /* Windows doesn't care to fix text placement for SL controls */
2143                 es->format_rect.bottom = es->format_rect.top + es->line_height;
2144
2145         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
2146                 EDIT_BuildLineDefs_ML(wnd, es);
2147 }
2148
2149
2150 /*********************************************************************
2151  *
2152  *      EDIT_UnlockBuffer
2153  *
2154  */
2155 static void EDIT_UnlockBuffer(WND *wnd, EDITSTATE *es, BOOL force)
2156 {
2157         if (!es) {
2158                 ERR("no EDITSTATE ... please report\n");
2159                 return;
2160         }
2161         if (!es->lock_count) {
2162                 ERR("lock_count == 0 ... please report\n");
2163                 return;
2164         }
2165         if (!es->text) {
2166                 ERR("es->text == 0 ... please report\n");
2167                 return;
2168         }
2169
2170         if (force || (es->lock_count == 1)) {
2171             if (es->hloc32W) {
2172                 CHAR *textA = NULL;
2173                 BOOL _16bit = FALSE;
2174                 UINT countA = 0;
2175                 UINT countW = strlenW(es->text) + 1;
2176
2177                 if(es->hloc32A)
2178                 {
2179                     UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
2180                     TRACE("Synchronizing with 32-bit ANSI buffer\n");
2181                     TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
2182                     countA = LocalSize(es->hloc32A);
2183                     if(countA_new > countA)
2184                     {
2185                         HLOCAL hloc32A_new;
2186                         UINT alloc_size = ROUND_TO_GROW(countA_new);
2187                         TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
2188                         hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
2189                         if(hloc32A_new)
2190                         {
2191                             es->hloc32A = hloc32A_new;
2192                             countA = LocalSize(hloc32A_new);
2193                             TRACE("Real new size %d bytes\n", countA);
2194                         }
2195                         else
2196                             WARN("FAILED! Will synchronize partially\n");
2197                     }
2198                     textA = LocalLock(es->hloc32A);
2199                 }
2200                 else if(es->hloc16)
2201                 {
2202                     UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
2203                     TRACE("Synchronizing with 16-bit ANSI buffer\n");
2204                     TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
2205                     countA = LOCAL_Size(wnd->hInstance, es->hloc16);
2206                     if(countA_new > countA)
2207                     {
2208                         HLOCAL16 hloc16_new;
2209                         UINT alloc_size = ROUND_TO_GROW(countA_new);
2210                         TRACE("Resizing 16-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
2211                         hloc16_new = LOCAL_ReAlloc(wnd->hInstance, es->hloc16, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
2212                         if(hloc16_new)
2213                         {
2214                             es->hloc16 = hloc16_new;
2215                             countA = LOCAL_Size(wnd->hInstance, hloc16_new);
2216                             TRACE("Real new size %d bytes\n", countA);
2217                         }
2218                         else
2219                             WARN("FAILED! Will synchronize partially\n");
2220                     }
2221                     textA = LOCAL_Lock(wnd->hInstance, es->hloc16);
2222                     _16bit = TRUE;
2223                 }
2224
2225                 if(textA)
2226                 {
2227                     WideCharToMultiByte(CP_ACP, 0, es->text, countW, textA, countA, NULL, NULL);
2228                     if(_16bit)
2229                         LOCAL_Unlock(wnd->hInstance, es->hloc16);
2230                     else
2231                         LocalUnlock(es->hloc32A);
2232                 }
2233
2234                 LocalUnlock(es->hloc32W);
2235                 es->text = NULL;
2236             }
2237             else {
2238                 ERR("no buffer ... please report\n");
2239                 return;
2240             }
2241         }
2242         es->lock_count--;
2243 }
2244
2245
2246 /*********************************************************************
2247  *
2248  *      EDIT_UpdateScrollInfo
2249  *
2250  */
2251 static void EDIT_UpdateScrollInfo(WND *wnd, EDITSTATE *es)
2252 {
2253     if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
2254     {
2255         SCROLLINFO si;
2256         si.cbSize       = sizeof(SCROLLINFO);
2257         si.fMask        = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2258         si.nMin         = 0;
2259         si.nMax         = es->line_count - 1;
2260         si.nPage        = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2261         si.nPos         = es->y_offset;
2262         TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
2263                 si.nMin, si.nMax, si.nPage, si.nPos);
2264         SetScrollInfo(wnd->hwndSelf, SB_VERT, &si, TRUE);
2265     }
2266
2267     if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
2268     {
2269         SCROLLINFO si;
2270         si.cbSize       = sizeof(SCROLLINFO);
2271         si.fMask        = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2272         si.nMin         = 0;
2273         si.nMax         = es->text_width - 1;
2274         si.nPage        = es->format_rect.right - es->format_rect.left;
2275         si.nPos         = es->x_offset;
2276         TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
2277                 si.nMin, si.nMax, si.nPage, si.nPos);
2278         SetScrollInfo(wnd->hwndSelf, SB_HORZ, &si, TRUE);
2279     }
2280 }
2281
2282 /*********************************************************************
2283  *
2284  *      EDIT_WordBreakProc
2285  *
2286  *      Find the beginning of words.
2287  *      Note:   unlike the specs for a WordBreakProc, this function only
2288  *              allows to be called without linebreaks between s[0] upto
2289  *              s[count - 1].  Remember it is only called
2290  *              internally, so we can decide this for ourselves.
2291  *
2292  */
2293 static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action)
2294 {
2295         INT ret = 0;
2296
2297         TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
2298
2299         if(!s) return 0;
2300
2301         switch (action) {
2302         case WB_LEFT:
2303                 if (!count)
2304                         break;
2305                 if (index)
2306                         index--;
2307                 if (s[index] == ' ') {
2308                         while (index && (s[index] == ' '))
2309                                 index--;
2310                         if (index) {
2311                                 while (index && (s[index] != ' '))
2312                                         index--;
2313                                 if (s[index] == ' ')
2314                                         index++;
2315                         }
2316                 } else {
2317                         while (index && (s[index] != ' '))
2318                                 index--;
2319                         if (s[index] == ' ')
2320                                 index++;
2321                 }
2322                 ret = index;
2323                 break;
2324         case WB_RIGHT:
2325                 if (!count)
2326                         break;
2327                 if (index)
2328                         index--;
2329                 if (s[index] == ' ')
2330                         while ((index < count) && (s[index] == ' ')) index++;
2331                 else {
2332                         while (s[index] && (s[index] != ' ') && (index < count))
2333                                 index++;
2334                         while ((s[index] == ' ') && (index < count)) index++;
2335                 }
2336                 ret = index;
2337                 break;
2338         case WB_ISDELIMITER:
2339                 ret = (s[index] == ' ');
2340                 break;
2341         default:
2342                 ERR("unknown action code, please report !\n");
2343                 break;
2344         }
2345         return ret;
2346 }
2347
2348
2349 /*********************************************************************
2350  *
2351  *      EM_CHARFROMPOS
2352  *
2353  *      returns line number (not index) in high-order word of result.
2354  *      NB : Q137805 is unclear about this. POINT * pointer in lParam apply
2355  *      to Richedit, not to the edit control. Original documentation is valid.
2356  *      FIXME: do the specs mean to return -1 if outside client area or
2357  *              if outside formatting rectangle ???
2358  *
2359  */
2360 static LRESULT EDIT_EM_CharFromPos(WND *wnd, EDITSTATE *es, INT x, INT y)
2361 {
2362         POINT pt;
2363         RECT rc;
2364         INT index;
2365
2366         pt.x = x;
2367         pt.y = y;
2368         GetClientRect(wnd->hwndSelf, &rc);
2369         if (!PtInRect(&rc, pt))
2370                 return -1;
2371
2372         index = EDIT_CharFromPos(wnd, es, x, y, NULL);
2373         return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
2374 }
2375
2376
2377 /*********************************************************************
2378  *
2379  *      EM_FMTLINES
2380  *
2381  * Enable or disable soft breaks.
2382  */
2383 static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
2384 {
2385         es->flags &= ~EF_USE_SOFTBRK;
2386         if (add_eol) {
2387                 es->flags |= EF_USE_SOFTBRK;
2388                 FIXME("soft break enabled, not implemented\n");
2389         }
2390         return add_eol;
2391 }
2392
2393
2394 /*********************************************************************
2395  *
2396  *      EM_GETHANDLE
2397  *
2398  *      Hopefully this won't fire back at us.
2399  *      We always start with a fixed buffer in the local heap.
2400  *      Despite of the documentation says that the local heap is used
2401  *      only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
2402  *      buffer on the local heap.
2403  *
2404  */
2405 static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
2406 {
2407         HLOCAL hLocal;
2408
2409         if (!(es->style & ES_MULTILINE))
2410                 return 0;
2411
2412         if(es->is_unicode)
2413             hLocal = es->hloc32W;
2414         else
2415         {
2416             if(!es->hloc32A)
2417             {
2418                 CHAR *textA;
2419                 UINT countA, alloc_size;
2420                 TRACE("Allocating 32-bit ANSI alias buffer\n");
2421                 countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2422                 alloc_size = ROUND_TO_GROW(countA);
2423                 if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
2424                 {
2425                     ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
2426                     return 0;
2427                 }
2428                 textA = LocalLock(es->hloc32A);
2429                 WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2430                 LocalUnlock(es->hloc32A);
2431             }
2432             hLocal = es->hloc32A;
2433         }
2434
2435         TRACE("Returning %04X, LocalSize() = %d\n", hLocal, LocalSize(hLocal));
2436         return hLocal;
2437 }
2438
2439
2440 /*********************************************************************
2441  *
2442  *      EM_GETHANDLE16
2443  *
2444  *      Hopefully this won't fire back at us.
2445  *      We always start with a buffer in 32 bit linear memory.
2446  *      However, with this message a 16 bit application requests
2447  *      a handle of 16 bit local heap memory, where it expects to find
2448  *      the text.
2449  *      It's a pitty that from this moment on we have to use this
2450  *      local heap, because applications may rely on the handle
2451  *      in the future.
2452  *
2453  *      In this function we'll try to switch to local heap.
2454  */
2455 static HLOCAL16 EDIT_EM_GetHandle16(WND *wnd, EDITSTATE *es)
2456 {
2457         CHAR *textA;
2458         UINT countA, alloc_size;
2459
2460         if (!(es->style & ES_MULTILINE))
2461                 return 0;
2462
2463         if (es->hloc16)
2464                 return es->hloc16;
2465
2466         if (!LOCAL_HeapSize(wnd->hInstance)) {
2467                 if (!LocalInit16(wnd->hInstance, 0,
2468                                 GlobalSize16(wnd->hInstance))) {
2469                         ERR("could not initialize local heap\n");
2470                         return 0;
2471                 }
2472                 TRACE("local heap initialized\n");
2473         }
2474
2475         countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
2476         alloc_size = ROUND_TO_GROW(countA);
2477
2478         TRACE("Allocating 16-bit ANSI alias buffer\n");
2479         if (!(es->hloc16 = LOCAL_Alloc(wnd->hInstance, LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size))) {
2480                 ERR("could not allocate new 16 bit buffer\n");
2481                 return 0;
2482         }
2483
2484         if (!(textA = (LPSTR)LOCAL_Lock(wnd->hInstance, es->hloc16))) {
2485                 ERR("could not lock new 16 bit buffer\n");
2486                 LOCAL_Free(wnd->hInstance, es->hloc16);
2487                 es->hloc16 = 0;
2488                 return 0;
2489         }
2490
2491         WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
2492         LOCAL_Unlock(wnd->hInstance, es->hloc16);
2493
2494         TRACE("Returning %04X, LocalSize() = %d\n", es->hloc16, LOCAL_Size(wnd->hInstance, es->hloc16));
2495         return es->hloc16;
2496 }
2497
2498
2499 /*********************************************************************
2500  *
2501  *      EM_GETLINE
2502  *
2503  */
2504 static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPARAM lParam, BOOL unicode)
2505 {
2506         LPWSTR src;
2507         INT line_len, dst_len;
2508         INT i;
2509
2510         if (es->style & ES_MULTILINE) {
2511                 if (line >= es->line_count)
2512                         return 0;
2513         } else
2514                 line = 0;
2515         i = EDIT_EM_LineIndex(es, line);
2516         src = es->text + i;
2517         line_len = EDIT_EM_LineLength(es, i);
2518         dst_len = *(WORD *)lParam;
2519         if(unicode)
2520         {
2521             LPWSTR dst = (LPWSTR)lParam;
2522             if(dst_len <= line_len)
2523             {
2524                 memcpy(dst, src, dst_len * sizeof(WCHAR));
2525                 return dst_len;
2526             }
2527             else /* Append 0 if enough space */
2528             {
2529                 memcpy(dst, src, line_len * sizeof(WCHAR));
2530                 dst[line_len] = 0;
2531                 return line_len;
2532             }
2533         }
2534         else
2535         {
2536             LPSTR dst = (LPSTR)lParam;
2537             INT ret;
2538             ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, dst, dst_len, NULL, NULL);
2539             if(!ret) /* Insufficient buffer size */
2540                 return dst_len;
2541             if(ret < dst_len) /* Append 0 if enough space */
2542                 dst[ret] = 0;
2543             return ret;
2544         }
2545 }
2546
2547
2548 /*********************************************************************
2549  *
2550  *      EM_GETSEL
2551  *
2552  */
2553 static LRESULT EDIT_EM_GetSel(EDITSTATE *es, LPUINT start, LPUINT end)
2554 {
2555         UINT s = es->selection_start;
2556         UINT e = es->selection_end;
2557
2558         ORDER_UINT(s, e);
2559         if (start)
2560                 *start = s;
2561         if (end)
2562                 *end = e;
2563         return MAKELONG(s, e);
2564 }
2565
2566
2567 /*********************************************************************
2568  *
2569  *      EM_GETTHUMB
2570  *
2571  *      FIXME: is this right ?  (or should it be only VSCROLL)
2572  *      (and maybe only for edit controls that really have their
2573  *      own scrollbars) (and maybe only for multiline controls ?)
2574  *      All in all: very poorly documented
2575  *
2576  */
2577 static LRESULT EDIT_EM_GetThumb(WND *wnd, EDITSTATE *es)
2578 {
2579         return MAKELONG(EDIT_WM_VScroll(wnd, es, EM_GETTHUMB16, 0),
2580                 EDIT_WM_HScroll(wnd, es, EM_GETTHUMB16, 0));
2581 }
2582
2583
2584 /*********************************************************************
2585  *
2586  *      EM_LINEFROMCHAR
2587  *
2588  */
2589 static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
2590 {
2591         INT line;
2592         LINEDEF *line_def;
2593
2594         if (!(es->style & ES_MULTILINE))
2595                 return 0;
2596         if (index > (INT)strlenW(es->text))
2597                 return es->line_count - 1;
2598         if (index == -1)
2599                 index = min(es->selection_start, es->selection_end);
2600
2601         line = 0;
2602         line_def = es->first_line_def;
2603         index -= line_def->length;
2604         while ((index >= 0) && line_def->next) {
2605                 line++;
2606                 line_def = line_def->next;
2607                 index -= line_def->length;
2608         }
2609         return line;
2610 }
2611
2612
2613 /*********************************************************************
2614  *
2615  *      EM_LINEINDEX
2616  *
2617  */
2618 static INT EDIT_EM_LineIndex(EDITSTATE *es, INT line)
2619 {
2620         INT line_index;
2621         LINEDEF *line_def;
2622
2623         if (!(es->style & ES_MULTILINE))
2624                 return 0;
2625         if (line >= es->line_count)
2626                 return -1;
2627
2628         line_index = 0;
2629         line_def = es->first_line_def;
2630         if (line == -1) {
2631                 INT index = es->selection_end - line_def->length;
2632                 while ((index >= 0) && line_def->next) {
2633                         line_index += line_def->length;
2634                         line_def = line_def->next;
2635                         index -= line_def->length;
2636                 }
2637         } else {
2638                 while (line > 0) {
2639                         line_index += line_def->length;
2640                         line_def = line_def->next;
2641                         line--;
2642                 }
2643         }
2644         return line_index;
2645 }
2646
2647
2648 /*********************************************************************
2649  *
2650  *      EM_LINELENGTH
2651  *
2652  */
2653 static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
2654 {
2655         LINEDEF *line_def;
2656
2657         if (!(es->style & ES_MULTILINE))
2658                 return strlenW(es->text);
2659
2660         if (index == -1) {
2661                 /* get the number of remaining non-selected chars of selected lines */
2662                 INT32 li;
2663                 INT32 count;
2664                 li = EDIT_EM_LineFromChar(es, es->selection_start);
2665                 /* # chars before start of selection area */
2666                 count = es->selection_start - EDIT_EM_LineIndex(es, li);
2667                 li = EDIT_EM_LineFromChar(es, es->selection_end);
2668                 /* # chars after end of selection */
2669                 count += EDIT_EM_LineIndex(es, li) +
2670                         EDIT_EM_LineLength(es, li) - es->selection_end;
2671                 return count;
2672         }
2673         line_def = es->first_line_def;
2674         index -= line_def->length;
2675         while ((index >= 0) && line_def->next) {
2676                 line_def = line_def->next;
2677                 index -= line_def->length;
2678         }
2679         return line_def->net_length;
2680 }
2681
2682
2683 /*********************************************************************
2684  *
2685  *      EM_LINESCROLL
2686  *
2687  *      NOTE: dx is in average character widths, dy - in lines;
2688  *
2689  */
2690 static BOOL EDIT_EM_LineScroll(WND *wnd, EDITSTATE *es, INT dx, INT dy)
2691 {
2692         if (!(es->style & ES_MULTILINE))
2693                 return FALSE;
2694
2695         dx *= es->char_width;
2696         return EDIT_EM_LineScroll_internal(wnd, es, dx, dy);
2697 }
2698
2699 /*********************************************************************
2700  *
2701  *      EDIT_EM_LineScroll_internal
2702  *
2703  *      Version of EDIT_EM_LineScroll for internal use.
2704  *      It doesn't refuse if ES_MULTILINE is set and assumes that
2705  *      dx is in pixels, dy - in lines.
2706  *
2707  */
2708 static BOOL EDIT_EM_LineScroll_internal(WND *wnd, EDITSTATE *es, INT dx, INT dy)
2709 {
2710         INT nyoff;
2711         INT x_offset_in_pixels;
2712
2713         if (es->style & ES_MULTILINE)
2714         {
2715             x_offset_in_pixels = es->x_offset;
2716         }
2717         else
2718         {
2719             dy = 0;
2720             x_offset_in_pixels = SLOWORD(EDIT_EM_PosFromChar(wnd, es, es->x_offset, FALSE));
2721         }
2722
2723         if (-dx > x_offset_in_pixels)
2724                 dx = -x_offset_in_pixels;
2725         if (dx > es->text_width - x_offset_in_pixels)
2726                 dx = es->text_width - x_offset_in_pixels;
2727         nyoff = max(0, es->y_offset + dy);
2728         if (nyoff >= es->line_count)
2729                 nyoff = es->line_count - 1;
2730         dy = (es->y_offset - nyoff) * es->line_height;
2731         if (dx || dy) {
2732                 RECT rc1;
2733                 RECT rc;
2734
2735                 es->y_offset = nyoff;
2736                 if(es->style & ES_MULTILINE)
2737                     es->x_offset += dx;
2738                 else
2739                     es->x_offset += dx / es->char_width;
2740
2741                 GetClientRect(wnd->hwndSelf, &rc1);
2742                 IntersectRect(&rc, &rc1, &es->format_rect);
2743                 ScrollWindowEx(wnd->hwndSelf, -dx, dy,
2744                                 NULL, &rc, (HRGN)NULL, NULL, SW_INVALIDATE);
2745                 /* force scroll info update */
2746                 EDIT_UpdateScrollInfo(wnd, es);
2747         }
2748         if (dx && !(es->flags & EF_HSCROLL_TRACK))
2749                 EDIT_NOTIFY_PARENT(wnd, EN_HSCROLL, "EN_HSCROLL");
2750         if (dy && !(es->flags & EF_VSCROLL_TRACK))
2751                 EDIT_NOTIFY_PARENT(wnd, EN_VSCROLL, "EN_VSCROLL");
2752         return TRUE;
2753 }
2754
2755
2756 /*********************************************************************
2757  *
2758  *      EM_POSFROMCHAR
2759  *
2760  */
2761 static LRESULT EDIT_EM_PosFromChar(WND *wnd, EDITSTATE *es, INT index, BOOL after_wrap)
2762 {
2763         INT len = strlenW(es->text);
2764         INT l;
2765         INT li;
2766         INT x;
2767         INT y = 0;
2768         HDC dc;
2769         HFONT old_font = 0;
2770         SIZE size;
2771
2772         index = min(index, len);
2773         dc = GetDC(wnd->hwndSelf);
2774         if (es->font)
2775                 old_font = SelectObject(dc, es->font);
2776         if (es->style & ES_MULTILINE) {
2777                 l = EDIT_EM_LineFromChar(es, index);
2778                 y = (l - es->y_offset) * es->line_height;
2779                 li = EDIT_EM_LineIndex(es, l);
2780                 if (after_wrap && (li == index) && l) {
2781                         INT l2 = l - 1;
2782                         LINEDEF *line_def = es->first_line_def;
2783                         while (l2) {
2784                                 line_def = line_def->next;
2785                                 l2--;
2786                         }
2787                         if (line_def->ending == END_WRAP) {
2788                                 l--;
2789                                 y -= es->line_height;
2790                                 li = EDIT_EM_LineIndex(es, l);
2791                         }
2792                 }
2793                 x = LOWORD(GetTabbedTextExtentW(dc, es->text + li, index - li,
2794                                 es->tabs_count, es->tabs)) - es->x_offset;
2795         } else {
2796                 LPWSTR text = EDIT_GetPasswordPointer_SL(es);
2797                 if (index < es->x_offset) {
2798                         GetTextExtentPoint32W(dc, text + index,
2799                                         es->x_offset - index, &size);
2800                         x = -size.cx;
2801                 } else {
2802                         GetTextExtentPoint32W(dc, text + es->x_offset,
2803                                         index - es->x_offset, &size);
2804                          x = size.cx;
2805                 }
2806                 y = 0;
2807                 if (es->style & ES_PASSWORD)
2808                         HeapFree(GetProcessHeap(), 0, text);
2809         }
2810         x += es->format_rect.left;
2811         y += es->format_rect.top;
2812         if (es->font)
2813                 SelectObject(dc, old_font);
2814         ReleaseDC(wnd->hwndSelf, dc);
2815         return MAKELONG((INT16)x, (INT16)y);
2816 }
2817
2818
2819 /*********************************************************************
2820  *
2821  *      EM_REPLACESEL
2822  *
2823  *      FIXME: handle ES_NUMBER and ES_OEMCONVERT here
2824  *
2825  */
2826 static void EDIT_EM_ReplaceSel(WND *wnd, EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update)
2827 {
2828         UINT strl = strlenW(lpsz_replace);
2829         UINT tl = strlenW(es->text);
2830         UINT utl;
2831         UINT s;
2832         UINT e;
2833         UINT i;
2834         LPWSTR p;
2835
2836         TRACE("%s, can_undo %d, send_update %d\n",
2837             debugstr_w(lpsz_replace), can_undo, send_update);
2838
2839         s = es->selection_start;
2840         e = es->selection_end;
2841
2842         if ((s == e) && !strl)
2843                 return;
2844
2845         ORDER_UINT(s, e);
2846
2847         if (!EDIT_MakeFit(wnd, es, tl - (e - s) + strl))
2848                 return;
2849
2850         if (e != s) {
2851                 /* there is something to be deleted */
2852                 if (can_undo) {
2853                         utl = strlenW(es->undo_text);
2854                         if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2855                                 /* undo-buffer is extended to the right */
2856                                 EDIT_MakeUndoFit(es, utl + e - s);
2857                                 strncpyW(es->undo_text + utl, es->text + s, e - s + 1);
2858                                 (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
2859                         } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2860                                 /* undo-buffer is extended to the left */
2861                                 EDIT_MakeUndoFit(es, utl + e - s);
2862                                 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2863                                         p[e - s] = p[0];
2864                                 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2865                                         p[i] = (es->text + s)[i];
2866                                 es->undo_position = s;
2867                         } else {
2868                                 /* new undo-buffer */
2869                                 EDIT_MakeUndoFit(es, e - s);
2870                                 strncpyW(es->undo_text, es->text + s, e - s + 1);
2871                                 es->undo_text[e - s] = 0; /* ensure 0 termination */
2872                                 es->undo_position = s;
2873                         }
2874                         /* any deletion makes the old insertion-undo invalid */
2875                         es->undo_insert_count = 0;
2876                 } else
2877                         EDIT_EM_EmptyUndoBuffer(es);
2878
2879                 /* now delete */
2880                 strcpyW(es->text + s, es->text + e);
2881         }
2882         if (strl) {
2883                 /* there is an insertion */
2884                 if (can_undo) {
2885                         if ((s == es->undo_position) ||
2886                                         ((es->undo_insert_count) &&
2887                                         (s == es->undo_position + es->undo_insert_count)))
2888                                 /*
2889                                  * insertion is new and at delete position or
2890                                  * an extension to either left or right
2891                                  */
2892                                 es->undo_insert_count += strl;
2893                         else {
2894                                 /* new insertion undo */
2895                                 es->undo_position = s;
2896                                 es->undo_insert_count = strl;
2897                                 /* new insertion makes old delete-buffer invalid */
2898                                 *es->undo_text = '\0';
2899                         }
2900                 } else
2901                         EDIT_EM_EmptyUndoBuffer(es);
2902
2903                 /* now insert */
2904                 tl = strlenW(es->text);
2905                 for (p = es->text + tl ; p >= es->text + s ; p--)
2906                         p[strl] = p[0];
2907                 for (i = 0 , p = es->text + s ; i < strl ; i++)
2908                         p[i] = lpsz_replace[i];
2909                 if(es->style & ES_UPPERCASE)
2910                         CharUpperBuffW(p, strl);
2911                 else if(es->style & ES_LOWERCASE)
2912                         CharLowerBuffW(p, strl);
2913                 s += strl;
2914         }
2915         /* FIXME: really inefficient */
2916         if (es->style & ES_MULTILINE)
2917                 EDIT_BuildLineDefs_ML(wnd, es);
2918         else
2919             EDIT_CalcLineWidth_SL(wnd, es);
2920
2921         EDIT_EM_SetSel(wnd, es, s, s, FALSE);
2922         es->flags |= EF_MODIFIED;
2923         if (send_update) es->flags |= EF_UPDATE;
2924         EDIT_EM_ScrollCaret(wnd, es);
2925
2926         /* force scroll info update */
2927         EDIT_UpdateScrollInfo(wnd, es);
2928
2929         /* FIXME: really inefficient */
2930         EDIT_UpdateText(wnd, NULL, TRUE);
2931 }
2932
2933
2934 /*********************************************************************
2935  *
2936  *      EM_SCROLL
2937  *
2938  */
2939 static LRESULT EDIT_EM_Scroll(WND *wnd, EDITSTATE *es, INT action)
2940 {
2941         INT dy;
2942
2943         if (!(es->style & ES_MULTILINE))
2944                 return (LRESULT)FALSE;
2945
2946         dy = 0;
2947
2948         switch (action) {
2949         case SB_LINEUP:
2950                 if (es->y_offset)
2951                         dy = -1;
2952                 break;
2953         case SB_LINEDOWN:
2954                 if (es->y_offset < es->line_count - 1)
2955                         dy = 1;
2956                 break;
2957         case SB_PAGEUP:
2958                 if (es->y_offset)
2959                         dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
2960                 break;
2961         case SB_PAGEDOWN:
2962                 if (es->y_offset < es->line_count - 1)
2963                         dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2964                 break;
2965         default:
2966                 return (LRESULT)FALSE;
2967         }
2968         if (dy) {
2969             INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2970             /* check if we are going to move too far */
2971             if(es->y_offset + dy > es->line_count - vlc)
2972                 dy = es->line_count - vlc - es->y_offset;
2973
2974             /* Notification is done in EDIT_EM_LineScroll */
2975             if(dy)
2976                 EDIT_EM_LineScroll(wnd, es, 0, dy);
2977         }
2978         return MAKELONG((INT16)dy, (BOOL16)TRUE);
2979 }
2980
2981
2982 /*********************************************************************
2983  *
2984  *      EM_SCROLLCARET
2985  *
2986  */
2987 static void EDIT_EM_ScrollCaret(WND *wnd, EDITSTATE *es)
2988 {
2989         if (es->style & ES_MULTILINE) {
2990                 INT l;
2991                 INT li;
2992                 INT vlc;
2993                 INT ww;
2994                 INT cw = es->char_width;
2995                 INT x;
2996                 INT dy = 0;
2997                 INT dx = 0;
2998
2999                 l = EDIT_EM_LineFromChar(es, es->selection_end);
3000                 li = EDIT_EM_LineIndex(es, l);
3001                 x = SLOWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, es->flags & EF_AFTER_WRAP));
3002                 vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3003                 if (l >= es->y_offset + vlc)
3004                         dy = l - vlc + 1 - es->y_offset;
3005                 if (l < es->y_offset)
3006                         dy = l - es->y_offset;
3007                 ww = es->format_rect.right - es->format_rect.left;
3008                 if (x < es->format_rect.left)
3009                         dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
3010                 if (x > es->format_rect.right)
3011                         dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
3012                 if (dy || dx)
3013                 {
3014                     /* check if we are going to move too far */
3015                     if(es->x_offset + dx + ww > es->text_width)
3016                         dx = es->text_width - ww - es->x_offset;
3017                     if(dx || dy)
3018                         EDIT_EM_LineScroll_internal(wnd, es, dx, dy);
3019                 }
3020         } else {
3021                 INT x;
3022                 INT goal;
3023                 INT format_width;
3024
3025                 if (!(es->style & ES_AUTOHSCROLL))
3026                         return;
3027
3028                 x = SLOWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, FALSE));
3029                 format_width = es->format_rect.right - es->format_rect.left;
3030                 if (x < es->format_rect.left) {
3031                         goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
3032                         do {
3033                                 es->x_offset--;
3034                                 x = SLOWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, FALSE));
3035                         } while ((x < goal) && es->x_offset);
3036                         /* FIXME: use ScrollWindow() somehow to improve performance */
3037                         EDIT_UpdateText(wnd, NULL, TRUE);
3038                 } else if (x > es->format_rect.right) {
3039                         INT x_last;
3040                         INT len = strlenW(es->text);
3041                         goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
3042                         do {
3043                                 es->x_offset++;
3044                                 x = SLOWORD(EDIT_EM_PosFromChar(wnd, es, es->selection_end, FALSE));
3045                                 x_last = SLOWORD(EDIT_EM_PosFromChar(wnd, es, len, FALSE));
3046                         } while ((x > goal) && (x_last > es->format_rect.right));
3047                         /* FIXME: use ScrollWindow() somehow to improve performance */
3048                         EDIT_UpdateText(wnd, NULL, TRUE);
3049                 }
3050         }
3051
3052     if(es->flags & EF_FOCUSED)
3053         EDIT_SetCaretPos(wnd, es, es->selection_end, es->flags & EF_AFTER_WRAP);
3054 }
3055
3056
3057 /*********************************************************************
3058  *
3059  *      EM_SETHANDLE
3060  *
3061  *      FIXME:  ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
3062  *
3063  */
3064 static void EDIT_EM_SetHandle(WND *wnd, EDITSTATE *es, HLOCAL hloc)
3065 {
3066         if (!(es->style & ES_MULTILINE))
3067                 return;
3068
3069         if (!hloc) {
3070                 WARN("called with NULL handle\n");
3071                 return;
3072         }
3073
3074         EDIT_UnlockBuffer(wnd, es, TRUE);
3075
3076         if(es->hloc16)
3077         {
3078             LOCAL_Free(wnd->hInstance, es->hloc16);
3079             es->hloc16 = (HLOCAL16)NULL;
3080         }
3081
3082         if(es->is_unicode)
3083         {
3084             if(es->hloc32A)
3085             {
3086                 LocalFree(es->hloc32A);
3087                 es->hloc32A = (HLOCAL)NULL;
3088             }
3089             es->hloc32W = hloc;
3090         }
3091         else
3092         {
3093             INT countW, countA;
3094             HLOCAL hloc32W_new;
3095             WCHAR *textW;
3096             CHAR *textA;
3097
3098             countA = LocalSize(hloc);
3099             textA = LocalLock(hloc);
3100             countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
3101             if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
3102             {
3103                 ERR("Could not allocate new unicode buffer\n");
3104                 return;
3105             }
3106             textW = LocalLock(hloc32W_new);
3107             MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
3108             LocalUnlock(hloc32W_new);
3109             LocalUnlock(hloc);
3110
3111             if(es->hloc32W)
3112                 LocalFree(es->hloc32W);
3113
3114             es->hloc32W = hloc32W_new;
3115             es->hloc32A = hloc;
3116         }
3117
3118         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
3119
3120         EDIT_LockBuffer(wnd, es);
3121
3122         es->x_offset = es->y_offset = 0;
3123         es->selection_start = es->selection_end = 0;
3124         EDIT_EM_EmptyUndoBuffer(es);
3125         es->flags &= ~EF_MODIFIED;
3126         es->flags &= ~EF_UPDATE;
3127         EDIT_BuildLineDefs_ML(wnd, es);
3128         EDIT_UpdateText(wnd, NULL, TRUE);
3129         EDIT_EM_ScrollCaret(wnd, es);
3130         /* force scroll info update */
3131         EDIT_UpdateScrollInfo(wnd, es);
3132 }
3133
3134
3135 /*********************************************************************
3136  *
3137  *      EM_SETHANDLE16
3138  *
3139  *      FIXME:  ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
3140  *
3141  */
3142 static void EDIT_EM_SetHandle16(WND *wnd, EDITSTATE *es, HLOCAL16 hloc)
3143 {
3144         INT countW, countA;
3145         HLOCAL hloc32W_new;
3146         WCHAR *textW;
3147         CHAR *textA;
3148
3149         if (!(es->style & ES_MULTILINE))
3150                 return;
3151
3152         if (!hloc) {
3153                 WARN("called with NULL handle\n");
3154                 return;
3155         }
3156
3157         EDIT_UnlockBuffer(wnd, es, TRUE);
3158
3159         if(es->hloc32A)
3160         {
3161             LocalFree(es->hloc32A);
3162             es->hloc32A = (HLOCAL)NULL;
3163         }
3164
3165         countA = LOCAL_Size(wnd->hInstance, hloc);
3166         textA = LOCAL_Lock(wnd->hInstance, hloc);
3167         countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
3168         if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
3169         {
3170             ERR("Could not allocate new unicode buffer\n");
3171             return;
3172         }
3173         textW = LocalLock(hloc32W_new);
3174         MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
3175         LocalUnlock(hloc32W_new);
3176         LOCAL_Unlock(wnd->hInstance, hloc);
3177
3178         if(es->hloc32W)
3179             LocalFree(es->hloc32W);
3180
3181         es->hloc32W = hloc32W_new;
3182         es->hloc16 = hloc;
3183
3184         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
3185
3186         EDIT_LockBuffer(wnd, es);
3187
3188         es->x_offset = es->y_offset = 0;
3189         es->selection_start = es->selection_end = 0;
3190         EDIT_EM_EmptyUndoBuffer(es);
3191         es->flags &= ~EF_MODIFIED;
3192         es->flags &= ~EF_UPDATE;
3193         EDIT_BuildLineDefs_ML(wnd, es);
3194         EDIT_UpdateText(wnd, NULL, TRUE);
3195         EDIT_EM_ScrollCaret(wnd, es);
3196         /* force scroll info update */
3197         EDIT_UpdateScrollInfo(wnd, es);
3198 }
3199
3200
3201 /*********************************************************************
3202  *
3203  *      EM_SETLIMITTEXT
3204  *
3205  *      FIXME: in WinNT maxsize is 0x7FFFFFFF / 0xFFFFFFFF
3206  *      However, the windows version is not complied to yet in all of edit.c
3207  *
3208  */
3209 static void EDIT_EM_SetLimitText(EDITSTATE *es, INT limit)
3210 {
3211         if (es->style & ES_MULTILINE) {
3212                 if (limit)
3213                         es->buffer_limit = min(limit, BUFLIMIT_MULTI);
3214                 else
3215                         es->buffer_limit = BUFLIMIT_MULTI;
3216         } else {
3217                 if (limit)
3218                         es->buffer_limit = min(limit, BUFLIMIT_SINGLE);
3219                 else
3220                         es->buffer_limit = BUFLIMIT_SINGLE;
3221         }
3222 }
3223
3224
3225 /*********************************************************************
3226  *
3227  *      EM_SETMARGINS
3228  *
3229  * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
3230  * action wParam despite what the docs say. EC_USEFONTINFO means one third
3231  * of the char's width, according to the new docs.
3232  *
3233  */
3234 static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
3235                                INT left, INT right)
3236 {
3237         if (action & EC_LEFTMARGIN) {
3238                 if (left != EC_USEFONTINFO)
3239                         es->left_margin = left;
3240                 else
3241                         es->left_margin = es->char_width / 3;
3242         }
3243
3244         if (action & EC_RIGHTMARGIN) {
3245                 if (right != EC_USEFONTINFO)
3246                         es->right_margin = right;
3247                 else
3248                         es->right_margin = es->char_width / 3;
3249         }
3250         TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
3251 }
3252
3253
3254 /*********************************************************************
3255  *
3256  *      EM_SETPASSWORDCHAR
3257  *
3258  */
3259 static void EDIT_EM_SetPasswordChar(WND *wnd, EDITSTATE *es, WCHAR c)
3260 {
3261         if (es->style & ES_MULTILINE)
3262                 return;
3263
3264         if (es->password_char == c)
3265                 return;
3266
3267         es->password_char = c;
3268         if (c) {
3269                 wnd->dwStyle |= ES_PASSWORD;
3270                 es->style |= ES_PASSWORD;
3271         } else {
3272                 wnd->dwStyle &= ~ES_PASSWORD;
3273                 es->style &= ~ES_PASSWORD;
3274         }
3275         EDIT_UpdateText(wnd, NULL, TRUE);
3276 }
3277
3278
3279 /*********************************************************************
3280  *
3281  *      EDIT_EM_SetSel
3282  *
3283  *      note:   unlike the specs say: the order of start and end
3284  *              _is_ preserved in Windows.  (i.e. start can be > end)
3285  *              In other words: this handler is OK
3286  *
3287  */
3288 static void EDIT_EM_SetSel(WND *wnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
3289 {
3290         UINT old_start = es->selection_start;
3291         UINT old_end = es->selection_end;
3292         UINT len = strlenW(es->text);
3293
3294         if (start == (UINT)-1) {
3295                 start = es->selection_end;
3296                 end = es->selection_end;
3297         } else {
3298                 start = min(start, len);
3299                 end = min(end, len);
3300         }
3301         es->selection_start = start;
3302         es->selection_end = end;
3303         if (after_wrap)
3304                 es->flags |= EF_AFTER_WRAP;
3305         else
3306                 es->flags &= ~EF_AFTER_WRAP;
3307 /* This is a little bit more efficient than before, not sure if it can be improved. FIXME? */
3308         ORDER_UINT(start, end);
3309         ORDER_UINT(end, old_end);
3310         ORDER_UINT(start, old_start);
3311         ORDER_UINT(old_start, old_end);
3312         if (end != old_start)
3313         {
3314 /*
3315  * One can also do
3316  *          ORDER_UINT32(end, old_start);
3317  *          EDIT_InvalidateText(wnd, es, start, end);
3318  *          EDIT_InvalidateText(wnd, es, old_start, old_end);
3319  * in place of the following if statement.
3320  */
3321             if (old_start > end )
3322             {
3323                 EDIT_InvalidateText(wnd, es, start, end);
3324                 EDIT_InvalidateText(wnd, es, old_start, old_end);
3325             }
3326             else
3327             {
3328                 EDIT_InvalidateText(wnd, es, start, old_start);
3329                 EDIT_InvalidateText(wnd, es, end, old_end);
3330             }
3331         }
3332         else EDIT_InvalidateText(wnd, es, start, old_end);
3333 }
3334
3335
3336 /*********************************************************************
3337  *
3338  *      EM_SETTABSTOPS
3339  *
3340  */
3341 static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, LPINT tabs)
3342 {
3343         if (!(es->style & ES_MULTILINE))
3344                 return FALSE;
3345         if (es->tabs)
3346                 HeapFree(GetProcessHeap(), 0, es->tabs);
3347         es->tabs_count = count;
3348         if (!count)
3349                 es->tabs = NULL;
3350         else {
3351                 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
3352                 memcpy(es->tabs, tabs, count * sizeof(INT));
3353         }
3354         return TRUE;
3355 }
3356
3357
3358 /*********************************************************************
3359  *
3360  *      EM_SETTABSTOPS16
3361  *
3362  */
3363 static BOOL EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, LPINT16 tabs)
3364 {
3365         if (!(es->style & ES_MULTILINE))
3366                 return FALSE;
3367         if (es->tabs)
3368                 HeapFree(GetProcessHeap(), 0, es->tabs);
3369         es->tabs_count = count;
3370         if (!count)
3371                 es->tabs = NULL;
3372         else {
3373                 INT i;
3374                 es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
3375                 for (i = 0 ; i < count ; i++)
3376                         es->tabs[i] = *tabs++;
3377         }
3378         return TRUE;
3379 }
3380
3381
3382 /*********************************************************************
3383  *
3384  *      EM_SETWORDBREAKPROC
3385  *
3386  */
3387 static void EDIT_EM_SetWordBreakProc(WND *wnd, EDITSTATE *es, LPARAM lParam)
3388 {
3389         if (es->word_break_proc == (void *)lParam)
3390                 return;
3391
3392         es->word_break_proc = (void *)lParam;
3393         es->word_break_proc16 = NULL;
3394
3395         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3396                 EDIT_BuildLineDefs_ML(wnd, es);
3397                 EDIT_UpdateText(wnd, NULL, TRUE);
3398         }
3399 }
3400
3401
3402 /*********************************************************************
3403  *
3404  *      EM_SETWORDBREAKPROC16
3405  *
3406  */
3407 static void EDIT_EM_SetWordBreakProc16(WND *wnd, EDITSTATE *es, EDITWORDBREAKPROC16 wbp)
3408 {
3409         if (es->word_break_proc16 == wbp)
3410                 return;
3411
3412         es->word_break_proc = NULL;
3413         es->word_break_proc16 = wbp;
3414         if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
3415                 EDIT_BuildLineDefs_ML(wnd, es);
3416                 EDIT_UpdateText(wnd, NULL, TRUE);
3417         }
3418 }
3419
3420
3421 /*********************************************************************
3422  *
3423  *      EM_UNDO / WM_UNDO
3424  *
3425  */
3426 static BOOL EDIT_EM_Undo(WND *wnd, EDITSTATE *es)
3427 {
3428         INT ulength;
3429         LPWSTR utext;
3430
3431         /* Protect read-only edit control from modification */
3432         if(es->style & ES_READONLY)
3433             return FALSE;
3434
3435         ulength = strlenW(es->undo_text);
3436         utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
3437
3438         strcpyW(utext, es->undo_text);
3439
3440         TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
3441                      es->undo_insert_count, debugstr_w(utext));
3442
3443         EDIT_EM_SetSel(wnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3444         EDIT_EM_EmptyUndoBuffer(es);
3445         EDIT_EM_ReplaceSel(wnd, es, TRUE, utext, TRUE);
3446         EDIT_EM_SetSel(wnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
3447         EDIT_EM_ScrollCaret(wnd, es);
3448         HeapFree(GetProcessHeap(), 0, utext);
3449
3450         TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
3451                         es->undo_insert_count, debugstr_w(es->undo_text));
3452
3453         if (es->flags & EF_UPDATE) {
3454                 es->flags &= ~EF_UPDATE;
3455                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
3456         }
3457
3458         return TRUE;
3459 }
3460
3461
3462 /*********************************************************************
3463  *
3464  *      WM_CHAR
3465  *
3466  */
3467 static void EDIT_WM_Char(WND *wnd, EDITSTATE *es, WCHAR c)
3468 {
3469         BOOL control;
3470
3471         /* Protect read-only edit control from modification */
3472         if(es->style & ES_READONLY)
3473             return;
3474
3475         control = GetKeyState(VK_CONTROL) & 0x8000;
3476
3477         switch (c) {
3478         case '\r':
3479             /* If the edit doesn't want the return and it's not a multiline edit, do nothing */
3480             if(!(es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
3481                 break;
3482         case '\n':
3483                 if (es->style & ES_MULTILINE) {
3484                         if (es->style & ES_READONLY) {
3485                                 EDIT_MoveHome(wnd, es, FALSE);
3486                                 EDIT_MoveDown_ML(wnd, es, FALSE);
3487                         } else {
3488                                 static const WCHAR cr_lfW[] = {'\r','\n',0};
3489                                 EDIT_EM_ReplaceSel(wnd, es, TRUE, cr_lfW, TRUE);
3490                                 if (es->flags & EF_UPDATE) {
3491                                         es->flags &= ~EF_UPDATE;
3492                                         EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
3493                                 }
3494                         }
3495                 }
3496                 break;
3497         case '\t':
3498                 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3499                 {
3500                         static const WCHAR tabW[] = {'\t',0};
3501                         EDIT_EM_ReplaceSel(wnd, es, TRUE, tabW, TRUE);
3502                         if (es->flags & EF_UPDATE) {
3503                                 es->flags &= ~EF_UPDATE;
3504                                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
3505                         }
3506                 }
3507                 break;
3508         case VK_BACK:
3509                 if (!(es->style & ES_READONLY) && !control) {
3510                         if (es->selection_start != es->selection_end)
3511                                 EDIT_WM_Clear(wnd, es);
3512                         else {
3513                                 /* delete character left of caret */
3514                                 EDIT_EM_SetSel(wnd, es, (UINT)-1, 0, FALSE);
3515                                 EDIT_MoveBackward(wnd, es, TRUE);
3516                                 EDIT_WM_Clear(wnd, es);
3517                         }
3518                 }
3519                 break;
3520         case 0x03: /* ^C */
3521                 SendMessageW(wnd->hwndSelf, WM_COPY, 0, 0);
3522                 break;
3523         case 0x16: /* ^V */
3524                 SendMessageW(wnd->hwndSelf, WM_PASTE, 0, 0);
3525                 break;
3526         case 0x18: /* ^X */
3527                 SendMessageW(wnd->hwndSelf, WM_CUT, 0, 0);
3528                 break;
3529
3530         default:
3531                 if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
3532                         WCHAR str[2];
3533                         str[0] = c;
3534                         str[1] = '\0';
3535                         EDIT_EM_ReplaceSel(wnd, es, TRUE, str, TRUE);
3536                         if (es->flags & EF_UPDATE) {
3537                                 es->flags &= ~EF_UPDATE;
3538                                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
3539                         }
3540                 }
3541                 break;
3542         }
3543 }
3544
3545
3546 /*********************************************************************
3547  *
3548  *      WM_COMMAND
3549  *
3550  */
3551 static void EDIT_WM_Command(WND *wnd, EDITSTATE *es, INT code, INT id, HWND control)
3552 {
3553         if (code || control)
3554                 return;
3555
3556         switch (id) {
3557                 case EM_UNDO:
3558                         EDIT_EM_Undo(wnd, es);
3559                         break;
3560                 case WM_CUT:
3561                         EDIT_WM_Cut(wnd, es);
3562                         break;
3563                 case WM_COPY:
3564                         EDIT_WM_Copy(wnd, es);
3565                         break;
3566                 case WM_PASTE:
3567                         EDIT_WM_Paste(wnd, es);
3568                         break;
3569                 case WM_CLEAR:
3570                         EDIT_WM_Clear(wnd, es);
3571                         break;
3572                 case EM_SETSEL:
3573                         EDIT_EM_SetSel(wnd, es, 0, (UINT)-1, FALSE);
3574                         EDIT_EM_ScrollCaret(wnd, es);
3575                         break;
3576                 default:
3577                         ERR("unknown menu item, please report\n");
3578                         break;
3579         }
3580 }
3581
3582
3583 /*********************************************************************
3584  *
3585  *      WM_CONTEXTMENU
3586  *
3587  *      Note: the resource files resource/sysres_??.rc cannot define a
3588  *              single popup menu.  Hence we use a (dummy) menubar
3589  *              containing the single popup menu as its first item.
3590  *
3591  *      FIXME: the message identifiers have been chosen arbitrarily,
3592  *              hence we use MF_BYPOSITION.
3593  *              We might as well use the "real" values (anybody knows ?)
3594  *              The menu definition is in resources/sysres_??.rc.
3595  *              Once these are OK, we better use MF_BYCOMMAND here
3596  *              (as we do in EDIT_WM_Command()).
3597  *
3598  */
3599 static void EDIT_WM_ContextMenu(WND *wnd, EDITSTATE *es, INT x, INT y)
3600 {
3601         HMENU menu = LoadMenuA(GetModuleHandleA("USER32"), "EDITMENU");
3602         HMENU popup = GetSubMenu(menu, 0);
3603         UINT start = es->selection_start;
3604         UINT end = es->selection_end;
3605
3606         ORDER_UINT(start, end);
3607
3608         /* undo */
3609         EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3610         /* cut */
3611         EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3612         /* copy */
3613         EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3614         /* paste */
3615         EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3616         /* delete */
3617         EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3618         /* select all */
3619         EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != strlenW(es->text)) ? MF_ENABLED : MF_GRAYED));
3620
3621         TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, wnd->hwndSelf, NULL);
3622         DestroyMenu(menu);
3623 }
3624
3625
3626 /*********************************************************************
3627  *
3628  *      WM_COPY
3629  *
3630  */
3631 static void EDIT_WM_Copy(WND *wnd, EDITSTATE *es)
3632 {
3633         INT s = es->selection_start;
3634         INT e = es->selection_end;
3635         HGLOBAL hdst;
3636         LPWSTR dst;
3637
3638         if (e == s)
3639                 return;
3640         ORDER_INT(s, e);
3641         hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (DWORD)(e - s + 1) * sizeof(WCHAR));
3642         dst = GlobalLock(hdst);
3643         strncpyW(dst, es->text + s, e - s);
3644         dst[e - s] = 0; /* ensure 0 termination */
3645         TRACE("%s\n", debugstr_w(dst));
3646         GlobalUnlock(hdst);
3647         OpenClipboard(wnd->hwndSelf);
3648         EmptyClipboard();
3649         SetClipboardData(CF_UNICODETEXT, hdst);
3650         CloseClipboard();
3651 }
3652
3653
3654 /*********************************************************************
3655  *
3656  *      WM_CREATE
3657  *
3658  */
3659 static LRESULT EDIT_WM_Create(WND *wnd, EDITSTATE *es, LPCWSTR name)
3660 {
3661         TRACE("%s\n", debugstr_w(name));
3662        /*
3663         *       To initialize some final structure members, we call some helper
3664         *       functions.  However, since the EDITSTATE is not consistent (i.e.
3665         *       not fully initialized), we should be very careful which
3666         *       functions can be called, and in what order.
3667         */
3668         EDIT_WM_SetFont(wnd, es, 0, FALSE);
3669         EDIT_EM_EmptyUndoBuffer(es);
3670
3671        if (name && *name) {
3672            EDIT_EM_ReplaceSel(wnd, es, FALSE, name, TRUE);
3673            /* if we insert text to the editline, the text scrolls out
3674             * of the window, as the caret is placed after the insert
3675             * pos normally; thus we reset es->selection... to 0 and
3676             * update caret
3677             */
3678            es->selection_start = es->selection_end = 0;
3679            EDIT_EM_ScrollCaret(wnd, es);
3680            if (es->flags & EF_UPDATE) {
3681                 es->flags &= ~EF_UPDATE;
3682                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
3683            }
3684        }
3685        /* force scroll info update */
3686        EDIT_UpdateScrollInfo(wnd, es);
3687        return 0;
3688 }
3689
3690
3691 /*********************************************************************
3692  *
3693  *      WM_DESTROY
3694  *
3695  */
3696 static void EDIT_WM_Destroy(WND *wnd, EDITSTATE *es)
3697 {
3698         if (es->hloc32W) {
3699                 while (LocalUnlock(es->hloc32W)) ;
3700                 LocalFree(es->hloc32W);
3701         }
3702         if (es->hloc32A) {
3703                 while (LocalUnlock(es->hloc32A)) ;
3704                 LocalFree(es->hloc32A);
3705         }
3706         if (es->hloc16) {
3707                 while (LOCAL_Unlock(wnd->hInstance, es->hloc16)) ;
3708                 LOCAL_Free(wnd->hInstance, es->hloc16);
3709         }
3710         HeapFree(GetProcessHeap(), 0, es);
3711         *(EDITSTATE **)wnd->wExtra = NULL;
3712 }
3713
3714
3715 /*********************************************************************
3716  *
3717  *      WM_ERASEBKGND
3718  *
3719  */
3720 static LRESULT EDIT_WM_EraseBkGnd(WND *wnd, EDITSTATE *es, HDC dc)
3721 {
3722         HBRUSH brush;
3723         RECT rc;
3724
3725         if ( get_app_version() >= 0x40000 &&(
3726                     !es->bEnableState || (es->style & ES_READONLY)))
3727                 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(wnd, dc);
3728         else
3729                 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(wnd, dc);
3730
3731         if (!brush)
3732                 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3733
3734         GetClientRect(wnd->hwndSelf, &rc);
3735         IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3736         GetClipBox(dc, &rc);
3737         /*
3738          *      FIXME:  specs say that we should UnrealizeObject() the brush,
3739          *              but the specs of UnrealizeObject() say that we shouldn't
3740          *              unrealize a stock object.  The default brush that
3741          *              DefWndProc() returns is ... a stock object.
3742          */
3743         FillRect(dc, &rc, brush);
3744         return -1;
3745 }
3746
3747
3748 /*********************************************************************
3749  *
3750  *      WM_GETTEXT
3751  *
3752  */
3753 static INT EDIT_WM_GetText(EDITSTATE *es, INT count, LPARAM lParam, BOOL unicode)
3754 {
3755     if(!count) return 0;
3756
3757     if(unicode)
3758     {
3759         LPWSTR textW = (LPWSTR)lParam;
3760         strncpyW(textW, es->text, count);
3761         textW[count - 1] = 0; /* ensure 0 termination */
3762         return strlenW(textW);
3763     }
3764     else
3765     {
3766         LPSTR textA = (LPSTR)lParam;
3767         WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL);
3768         textA[count - 1] = 0; /* ensure 0 termination */
3769         return strlen(textA);
3770     }
3771 }
3772
3773 /*********************************************************************
3774  *
3775  *      WM_HSCROLL
3776  *
3777  */
3778 static LRESULT EDIT_WM_HScroll(WND *wnd, EDITSTATE *es, INT action, INT pos)
3779 {
3780         INT dx;
3781         INT fw;
3782
3783         if (!(es->style & ES_MULTILINE))
3784                 return 0;
3785
3786         if (!(es->style & ES_AUTOHSCROLL))
3787                 return 0;
3788
3789         dx = 0;
3790         fw = es->format_rect.right - es->format_rect.left;
3791         switch (action) {
3792         case SB_LINELEFT:
3793                 TRACE("SB_LINELEFT\n");
3794                 if (es->x_offset)
3795                         dx = -es->char_width;
3796                 break;
3797         case SB_LINERIGHT:
3798                 TRACE("SB_LINERIGHT\n");
3799                 if (es->x_offset < es->text_width)
3800                         dx = es->char_width;
3801                 break;
3802         case SB_PAGELEFT:
3803                 TRACE("SB_PAGELEFT\n");
3804                 if (es->x_offset)
3805                         dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3806                 break;
3807         case SB_PAGERIGHT:
3808                 TRACE("SB_PAGERIGHT\n");
3809                 if (es->x_offset < es->text_width)
3810                         dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3811                 break;
3812         case SB_LEFT:
3813                 TRACE("SB_LEFT\n");
3814                 if (es->x_offset)
3815                         dx = -es->x_offset;
3816                 break;
3817         case SB_RIGHT:
3818                 TRACE("SB_RIGHT\n");
3819                 if (es->x_offset < es->text_width)
3820                         dx = es->text_width - es->x_offset;
3821                 break;
3822         case SB_THUMBTRACK:
3823                 TRACE("SB_THUMBTRACK %d\n", pos);
3824                 es->flags |= EF_HSCROLL_TRACK;
3825                 if(es->style & WS_HSCROLL)
3826                     dx = pos - es->x_offset;
3827                 else
3828                 {
3829                     INT fw, new_x;
3830                     /* Sanity check */
3831                     if(pos < 0 || pos > 100) return 0;
3832                     /* Assume default scroll range 0-100 */
3833                     fw = es->format_rect.right - es->format_rect.left;
3834                     new_x = pos * (es->text_width - fw) / 100;
3835                     dx = es->text_width ? (new_x - es->x_offset) : 0;
3836                 }
3837                 break;
3838         case SB_THUMBPOSITION:
3839                 TRACE("SB_THUMBPOSITION %d\n", pos);
3840                 es->flags &= ~EF_HSCROLL_TRACK;
3841                 if(wnd->dwStyle & WS_HSCROLL)
3842                     dx = pos - es->x_offset;
3843                 else
3844                 {
3845                     INT fw, new_x;
3846                     /* Sanity check */
3847                     if(pos < 0 || pos > 100) return 0;
3848                     /* Assume default scroll range 0-100 */
3849                     fw = es->format_rect.right - es->format_rect.left;
3850                     new_x = pos * (es->text_width - fw) / 100;
3851                     dx = es->text_width ? (new_x - es->x_offset) : 0;
3852                 }
3853                 if (!dx) {
3854                         /* force scroll info update */
3855                         EDIT_UpdateScrollInfo(wnd, es);
3856                         EDIT_NOTIFY_PARENT(wnd, EN_HSCROLL, "EN_HSCROLL");
3857                 }
3858                 break;
3859         case SB_ENDSCROLL:
3860                 TRACE("SB_ENDSCROLL\n");
3861                 break;
3862         /*
3863          *      FIXME : the next two are undocumented !
3864          *      Are we doing the right thing ?
3865          *      At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
3866          *      although it's also a regular control message.
3867          */
3868         case EM_GETTHUMB: /* this one is used by NT notepad */
3869         case EM_GETTHUMB16:
3870         {
3871                 LRESULT ret;
3872                 if(wnd->dwStyle & WS_HSCROLL)
3873                     ret = GetScrollPos(wnd->hwndSelf, SB_HORZ);
3874                 else
3875                 {
3876                     /* Assume default scroll range 0-100 */
3877                     INT fw = es->format_rect.right - es->format_rect.left;
3878                     ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
3879                 }
3880                 TRACE("EM_GETTHUMB: returning %ld\n", ret);
3881                 return ret;
3882         }
3883         case EM_LINESCROLL16:
3884                 TRACE("EM_LINESCROLL16\n");
3885                 dx = pos;
3886                 break;
3887
3888         default:
3889                 ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
3890                     action, action);
3891                 return 0;
3892         }
3893         if (dx)
3894         {
3895             INT fw = es->format_rect.right - es->format_rect.left;
3896             /* check if we are going to move too far */
3897             if(es->x_offset + dx + fw > es->text_width)
3898                 dx = es->text_width - fw - es->x_offset;
3899             if(dx)
3900                 EDIT_EM_LineScroll_internal(wnd, es, dx, 0);
3901         }
3902         return 0;
3903 }
3904
3905
3906 /*********************************************************************
3907  *
3908  *      EDIT_CheckCombo
3909  *
3910  */
3911 static BOOL EDIT_CheckCombo(WND *wnd, EDITSTATE *es, UINT msg, INT key)
3912 {
3913    HWND hLBox = es->hwndListBox;
3914    HWND hCombo;
3915    BOOL bDropped;
3916    int  nEUI;
3917
3918    if (!hLBox)
3919       return FALSE;
3920
3921    hCombo   = wnd->parent->hwndSelf;
3922    bDropped = TRUE;
3923    nEUI     = 0;
3924
3925    TRACE_(combo)("[%04x]: handling msg %04x (%04x)\n",
3926                      wnd->hwndSelf, (UINT16)msg, (UINT16)key);
3927
3928    if (key == VK_UP || key == VK_DOWN)
3929    {
3930       if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
3931          nEUI = 1;
3932
3933       if (msg == WM_KEYDOWN || nEUI)
3934           bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3935    }
3936
3937    switch (msg)
3938    {
3939       case WM_KEYDOWN:
3940          if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3941          {
3942             /* make sure ComboLBox pops up */
3943             SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3944             key = VK_F4;
3945             nEUI = 2;
3946          }
3947
3948          SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)key, 0);
3949          break;
3950
3951       case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3952          if (nEUI)
3953             SendMessageW(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
3954          else
3955             SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)VK_F4, 0);
3956          break;
3957    }
3958
3959    if(nEUI == 2)
3960       SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3961
3962    return TRUE;
3963 }
3964
3965
3966 /*********************************************************************
3967  *
3968  *      WM_KEYDOWN
3969  *
3970  *      Handling of special keys that don't produce a WM_CHAR
3971  *      (i.e. non-printable keys) & Backspace & Delete
3972  *
3973  */
3974 static LRESULT EDIT_WM_KeyDown(WND *wnd, EDITSTATE *es, INT key)
3975 {
3976         BOOL shift;
3977         BOOL control;
3978
3979         if (GetKeyState(VK_MENU) & 0x8000)
3980                 return 0;
3981
3982         shift = GetKeyState(VK_SHIFT) & 0x8000;
3983         control = GetKeyState(VK_CONTROL) & 0x8000;
3984
3985         switch (key) {
3986         case VK_F4:
3987         case VK_UP:
3988                 if (EDIT_CheckCombo(wnd, es, WM_KEYDOWN, key) || key == VK_F4)
3989                         break;
3990
3991                 /* fall through */
3992         case VK_LEFT:
3993                 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3994                         EDIT_MoveUp_ML(wnd, es, shift);
3995                 else
3996                         if (control)
3997                                 EDIT_MoveWordBackward(wnd, es, shift);
3998                         else
3999                                 EDIT_MoveBackward(wnd, es, shift);
4000                 break;
4001         case VK_DOWN:
4002                 if (EDIT_CheckCombo(wnd, es, WM_KEYDOWN, key))
4003                         break;
4004                 /* fall through */
4005         case VK_RIGHT:
4006                 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
4007                         EDIT_MoveDown_ML(wnd, es, shift);
4008                 else if (control)
4009                         EDIT_MoveWordForward(wnd, es, shift);
4010                 else
4011                         EDIT_MoveForward(wnd, es, shift);
4012                 break;
4013         case VK_HOME:
4014                 EDIT_MoveHome(wnd, es, shift);
4015                 break;
4016         case VK_END:
4017                 EDIT_MoveEnd(wnd, es, shift);
4018                 break;
4019         case VK_PRIOR:
4020                 if (es->style & ES_MULTILINE)
4021                         EDIT_MovePageUp_ML(wnd, es, shift);
4022                 else
4023                         EDIT_CheckCombo(wnd, es, WM_KEYDOWN, key);
4024                 break;
4025         case VK_NEXT:
4026                 if (es->style & ES_MULTILINE)
4027                         EDIT_MovePageDown_ML(wnd, es, shift);
4028                 else
4029                         EDIT_CheckCombo(wnd, es, WM_KEYDOWN, key);
4030                 break;
4031         case VK_DELETE:
4032                 if (!(es->style & ES_READONLY) && !(shift && control)) {
4033                         if (es->selection_start != es->selection_end) {
4034                                 if (shift)
4035                                         EDIT_WM_Cut(wnd, es);
4036                                 else
4037                                         EDIT_WM_Clear(wnd, es);
4038                         } else {
4039                                 if (shift) {
4040                                         /* delete character left of caret */
4041                                         EDIT_EM_SetSel(wnd, es, (UINT)-1, 0, FALSE);
4042                                         EDIT_MoveBackward(wnd, es, TRUE);
4043                                         EDIT_WM_Clear(wnd, es);
4044                                 } else if (control) {
4045                                         /* delete to end of line */
4046                                         EDIT_EM_SetSel(wnd, es, (UINT)-1, 0, FALSE);
4047                                         EDIT_MoveEnd(wnd, es, TRUE);
4048                                         EDIT_WM_Clear(wnd, es);
4049                                 } else {
4050                                         /* delete character right of caret */
4051                                         EDIT_EM_SetSel(wnd, es, (UINT)-1, 0, FALSE);
4052                                         EDIT_MoveForward(wnd, es, TRUE);
4053                                         EDIT_WM_Clear(wnd, es);
4054                                 }
4055                         }
4056                 }
4057                 break;
4058         case VK_INSERT:
4059                 if (shift) {
4060                         if (!(es->style & ES_READONLY))
4061                                 EDIT_WM_Paste(wnd, es);
4062                 } else if (control)
4063                         EDIT_WM_Copy(wnd, es);
4064                 break;
4065         case VK_RETURN:
4066             /* If the edit doesn't want the return send a message to the default object */
4067             if(!(es->style & ES_WANTRETURN))
4068             {
4069                 HWND hwndParent = GetParent(wnd->hwndSelf);
4070                 DWORD dw = SendMessageW( hwndParent, DM_GETDEFID, 0, 0 );
4071                 if (HIWORD(dw) == DC_HASDEFID)
4072                 {
4073                     SendMessageW( hwndParent, WM_COMMAND,
4074                                   MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
4075                               (LPARAM)GetDlgItem( hwndParent, LOWORD(dw) ) );
4076                 }
4077             }
4078             break;
4079         }
4080         return 0;
4081 }
4082
4083
4084 /*********************************************************************
4085  *
4086  *      WM_KILLFOCUS
4087  *
4088  */
4089 static LRESULT EDIT_WM_KillFocus(WND *wnd, EDITSTATE *es)
4090 {
4091         es->flags &= ~EF_FOCUSED;
4092         DestroyCaret();
4093         if(!(es->style & ES_NOHIDESEL))
4094                 EDIT_InvalidateText(wnd, es, es->selection_start, es->selection_end);
4095         EDIT_NOTIFY_PARENT(wnd, EN_KILLFOCUS, "EN_KILLFOCUS");
4096         return 0;
4097 }
4098
4099
4100 /*********************************************************************
4101  *
4102  *      WM_LBUTTONDBLCLK
4103  *
4104  *      The caret position has been set on the WM_LBUTTONDOWN message
4105  *
4106  */
4107 static LRESULT EDIT_WM_LButtonDblClk(WND *wnd, EDITSTATE *es)
4108 {
4109         INT s;
4110         INT e = es->selection_end;
4111         INT l;
4112         INT li;
4113         INT ll;
4114
4115         if (!(es->flags & EF_FOCUSED))
4116                 return 0;
4117
4118         l = EDIT_EM_LineFromChar(es, e);
4119         li = EDIT_EM_LineIndex(es, l);
4120         ll = EDIT_EM_LineLength(es, e);
4121         s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
4122         e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
4123         EDIT_EM_SetSel(wnd, es, s, e, FALSE);
4124         EDIT_EM_ScrollCaret(wnd, es);
4125         return 0;
4126 }
4127
4128
4129 /*********************************************************************
4130  *
4131  *      WM_LBUTTONDOWN
4132  *
4133  */
4134 static LRESULT EDIT_WM_LButtonDown(WND *wnd, EDITSTATE *es, DWORD keys, INT x, INT y)
4135 {
4136         INT e;
4137         BOOL after_wrap;
4138
4139         if (!(es->flags & EF_FOCUSED))
4140                 return 0;
4141
4142         es->bCaptureState = TRUE;
4143         SetCapture(wnd->hwndSelf);
4144         EDIT_ConfinePoint(es, &x, &y);
4145         e = EDIT_CharFromPos(wnd, es, x, y, &after_wrap);
4146         EDIT_EM_SetSel(wnd, es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
4147         EDIT_EM_ScrollCaret(wnd, es);
4148         es->region_posx = es->region_posy = 0;
4149         SetTimer(wnd->hwndSelf, 0, 100, NULL);
4150         return 0;
4151 }
4152
4153
4154 /*********************************************************************
4155  *
4156  *      WM_LBUTTONUP
4157  *
4158  */
4159 static LRESULT EDIT_WM_LButtonUp(HWND hwndSelf, EDITSTATE *es)
4160 {
4161         if (es->bCaptureState && GetCapture() == hwndSelf) {
4162                 KillTimer(hwndSelf, 0);
4163                 ReleaseCapture();
4164         }
4165         es->bCaptureState = FALSE;
4166         return 0;
4167 }
4168
4169
4170 /*********************************************************************
4171  *
4172  *      WM_MBUTTONDOWN
4173  *
4174  */
4175 static LRESULT EDIT_WM_MButtonDown(WND *wnd)
4176 {
4177     SendMessageW(wnd->hwndSelf,WM_PASTE,0,0);
4178     return 0;
4179 }
4180
4181
4182 /*********************************************************************
4183  *
4184  *      WM_MOUSEMOVE
4185  *
4186  */
4187 static LRESULT EDIT_WM_MouseMove(WND *wnd, EDITSTATE *es, INT x, INT y)
4188 {
4189         INT e;
4190         BOOL after_wrap;
4191         INT prex, prey;
4192
4193         if (GetCapture() != wnd->hwndSelf)
4194                 return 0;
4195
4196         /*
4197          *      FIXME: gotta do some scrolling if outside client
4198          *              area.  Maybe reset the timer ?
4199          */
4200         prex = x; prey = y;
4201         EDIT_ConfinePoint(es, &x, &y);
4202         es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
4203         es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
4204         e = EDIT_CharFromPos(wnd, es, x, y, &after_wrap);
4205         EDIT_EM_SetSel(wnd, es, es->selection_start, e, after_wrap);
4206         return 0;
4207 }
4208
4209
4210 /*********************************************************************
4211  *
4212  *      WM_NCCREATE
4213  *
4214  */
4215 static LRESULT EDIT_WM_NCCreate(WND *wnd, DWORD style, HWND hwndParent, BOOL unicode)
4216 {
4217         EDITSTATE *es;
4218         UINT alloc_size;
4219
4220         TRACE("Creating %s edit control\n", unicode ? "Unicode" : "ANSI");
4221
4222         if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
4223                 return FALSE;
4224         *(EDITSTATE **)wnd->wExtra = es;
4225
4226        /*
4227         *      Note: since the EDITSTATE has not been fully initialized yet,
4228         *            we can't use any API calls that may send
4229         *            WM_XXX messages before WM_NCCREATE is completed.
4230         */
4231
4232         es->is_unicode = unicode;
4233         es->style = style;
4234
4235         es->bEnableState = !(style & WS_DISABLED);
4236
4237         /*
4238          * In Win95 look and feel, the WS_BORDER style is replaced by the
4239          * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
4240          * control a non client area.
4241          */
4242         if (TWEAK_WineLook != WIN31_LOOK)
4243         {
4244           if (es->style & WS_BORDER)
4245           {
4246             es->style      &= ~WS_BORDER;
4247             wnd->dwStyle   &= ~WS_BORDER;
4248             wnd->dwExStyle |= WS_EX_CLIENTEDGE;
4249           }
4250         }
4251         else
4252         {
4253           if ((es->style & WS_BORDER) && !(es->style & WS_DLGFRAME))
4254             wnd->dwStyle &= ~WS_BORDER;
4255         }
4256
4257         if (es->style & ES_COMBO)
4258            es->hwndListBox = GetDlgItem(hwndParent, ID_CB_LISTBOX);
4259
4260         if (es->style & ES_MULTILINE) {
4261                 es->buffer_limit = BUFLIMIT_MULTI;
4262                 if (es->style & WS_VSCROLL)
4263                         es->style |= ES_AUTOVSCROLL;
4264                 if (es->style & WS_HSCROLL)
4265                         es->style |= ES_AUTOHSCROLL;
4266                 es->style &= ~ES_PASSWORD;
4267                 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
4268                         if (es->style & ES_RIGHT)
4269                                 es->style &= ~ES_CENTER;
4270                         es->style &= ~WS_HSCROLL;
4271                         es->style &= ~ES_AUTOHSCROLL;
4272                 }
4273
4274                 /* FIXME: for now, all multi line controls are AUTOVSCROLL */
4275                 es->style |= ES_AUTOVSCROLL;
4276         } else {
4277                 es->buffer_limit = BUFLIMIT_SINGLE;
4278                 es->style &= ~ES_CENTER;
4279                 es->style &= ~ES_RIGHT;
4280                 es->style &= ~WS_HSCROLL;
4281                 es->style &= ~WS_VSCROLL;
4282                 es->style &= ~ES_AUTOVSCROLL;
4283                 es->style &= ~ES_WANTRETURN;
4284                 if (es->style & ES_UPPERCASE) {
4285                         es->style &= ~ES_LOWERCASE;
4286                         es->style &= ~ES_NUMBER;
4287                 } else if (es->style & ES_LOWERCASE)
4288                         es->style &= ~ES_NUMBER;
4289                 if (es->style & ES_PASSWORD)
4290                         es->password_char = '*';
4291
4292                 /* FIXME: for now, all single line controls are AUTOHSCROLL */
4293                 es->style |= ES_AUTOHSCROLL;
4294         }
4295
4296         alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
4297         if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
4298             return FALSE;
4299         es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
4300
4301         if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
4302                 return FALSE;
4303         es->undo_buffer_size = es->buffer_size;
4304
4305         if (es->style & ES_MULTILINE)
4306                 if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
4307                         return FALSE;
4308         es->line_count = 1;
4309
4310         return TRUE;
4311 }
4312
4313 /*********************************************************************
4314  *
4315  *      WM_PAINT
4316  *
4317  */
4318 static void EDIT_WM_Paint(WND *wnd, EDITSTATE *es, WPARAM wParam)
4319 {
4320         PAINTSTRUCT ps;
4321         INT i;
4322         HDC dc;
4323         HFONT old_font = 0;
4324         RECT rc;
4325         RECT rcLine;
4326         RECT rcRgn;
4327         BOOL rev = es->bEnableState &&
4328                                 ((es->flags & EF_FOCUSED) ||
4329                                         (es->style & ES_NOHIDESEL));
4330         if (!wParam)
4331             dc = BeginPaint(wnd->hwndSelf, &ps);
4332         else
4333             dc = (HDC) wParam;
4334         if(es->style & WS_BORDER) {
4335                 GetClientRect(wnd->hwndSelf, &rc);
4336                 if(es->style & ES_MULTILINE) {
4337                         if(es->style & WS_HSCROLL) rc.bottom++;
4338                         if(es->style & WS_VSCROLL) rc.right++;
4339                 }
4340                 Rectangle(dc, rc.left, rc.top, rc.right, rc.bottom);
4341         }
4342         IntersectClipRect(dc, es->format_rect.left,
4343                                 es->format_rect.top,
4344                                 es->format_rect.right,
4345                                 es->format_rect.bottom);
4346         if (es->style & ES_MULTILINE) {
4347                 GetClientRect(wnd->hwndSelf, &rc);
4348                 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
4349         }
4350         if (es->font)
4351                 old_font = SelectObject(dc, es->font);
4352         if ( get_app_version() >= 0x40000 &&(
4353                     !es->bEnableState || (es->style & ES_READONLY)))
4354                 EDIT_SEND_CTLCOLORSTATIC(wnd, dc);
4355         else
4356                 EDIT_SEND_CTLCOLOR(wnd, dc);
4357
4358         if (!es->bEnableState)
4359                 SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
4360         GetClipBox(dc, &rcRgn);
4361         if (es->style & ES_MULTILINE) {
4362                 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4363                 for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
4364                         EDIT_GetLineRect(wnd, es, i, 0, -1, &rcLine);
4365                         if (IntersectRect(&rc, &rcRgn, &rcLine))
4366                                 EDIT_PaintLine(wnd, es, dc, i, rev);
4367                 }
4368         } else {
4369                 EDIT_GetLineRect(wnd, es, 0, 0, -1, &rcLine);
4370                 if (IntersectRect(&rc, &rcRgn, &rcLine))
4371                         EDIT_PaintLine(wnd, es, dc, 0, rev);
4372         }
4373         if (es->font)
4374                 SelectObject(dc, old_font);
4375
4376         if (!wParam)
4377             EndPaint(wnd->hwndSelf, &ps);
4378 }
4379
4380
4381 /*********************************************************************
4382  *
4383  *      WM_PASTE
4384  *
4385  */
4386 static void EDIT_WM_Paste(WND *wnd, EDITSTATE *es)
4387 {
4388         HGLOBAL hsrc;
4389         LPWSTR src;
4390
4391         /* Protect read-only edit control from modification */
4392         if(es->style & ES_READONLY)
4393             return;
4394
4395         OpenClipboard(wnd->hwndSelf);
4396         if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
4397                 src = (LPWSTR)GlobalLock(hsrc);
4398                 EDIT_EM_ReplaceSel(wnd, es, TRUE, src, TRUE);
4399                 GlobalUnlock(hsrc);
4400
4401                 if (es->flags & EF_UPDATE) {
4402                         es->flags &= ~EF_UPDATE;
4403                         EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
4404                 }
4405         }
4406         CloseClipboard();
4407 }
4408
4409
4410 /*********************************************************************
4411  *
4412  *      WM_SETFOCUS
4413  *
4414  */
4415 static void EDIT_WM_SetFocus(WND *wnd, EDITSTATE *es)
4416 {
4417         es->flags |= EF_FOCUSED;
4418         CreateCaret(wnd->hwndSelf, 0, 2, es->line_height);
4419         EDIT_SetCaretPos(wnd, es, es->selection_end,
4420                          es->flags & EF_AFTER_WRAP);
4421         if(!(es->style & ES_NOHIDESEL))
4422                 EDIT_InvalidateText(wnd, es, es->selection_start, es->selection_end);
4423         ShowCaret(wnd->hwndSelf);
4424         EDIT_NOTIFY_PARENT(wnd, EN_SETFOCUS, "EN_SETFOCUS");
4425 }
4426
4427
4428 /*********************************************************************
4429  *
4430  *      WM_SETFONT
4431  *
4432  * With Win95 look the margins are set to default font value unless
4433  * the system font (font == 0) is being set, in which case they are left
4434  * unchanged.
4435  *
4436  */
4437 static void EDIT_WM_SetFont(WND *wnd, EDITSTATE *es, HFONT font, BOOL redraw)
4438 {
4439         TEXTMETRICW tm;
4440         HDC dc;
4441         HFONT old_font = 0;
4442         RECT r;
4443
4444         es->font = font;
4445         dc = GetDC(wnd->hwndSelf);
4446         if (font)
4447                 old_font = SelectObject(dc, font);
4448         GetTextMetricsW(dc, &tm);
4449         es->line_height = tm.tmHeight;
4450         es->char_width = tm.tmAveCharWidth;
4451         if (font)
4452                 SelectObject(dc, old_font);
4453         ReleaseDC(wnd->hwndSelf, dc);
4454         if (font && (TWEAK_WineLook > WIN31_LOOK))
4455                 EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
4456                                    EC_USEFONTINFO, EC_USEFONTINFO);
4457
4458         /* Force the recalculation of the format rect for each font change */
4459         GetClientRect(wnd->hwndSelf, &r);
4460         EDIT_SetRectNP(wnd, es, &r);
4461
4462         if (es->style & ES_MULTILINE)
4463                 EDIT_BuildLineDefs_ML(wnd, es);
4464         else
4465             EDIT_CalcLineWidth_SL(wnd, es);
4466
4467         if (redraw)
4468                 EDIT_UpdateText(wnd, NULL, TRUE);
4469         if (es->flags & EF_FOCUSED) {
4470                 DestroyCaret();
4471                 CreateCaret(wnd->hwndSelf, 0, 2, es->line_height);
4472                 EDIT_SetCaretPos(wnd, es, es->selection_end,
4473                                  es->flags & EF_AFTER_WRAP);
4474                 ShowCaret(wnd->hwndSelf);
4475         }
4476 }
4477
4478
4479 /*********************************************************************
4480  *
4481  *      WM_SETTEXT
4482  *
4483  * NOTES
4484  *  For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
4485  *  The modified flag is reset. No notifications are sent.
4486  *
4487  *  For single-line controls, reception of WM_SETTEXT triggers:
4488  *  The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
4489  *
4490  */
4491 static void EDIT_WM_SetText(WND *wnd, EDITSTATE *es, LPARAM lParam, BOOL unicode)
4492 {
4493     LPWSTR text = NULL;
4494
4495     if(unicode)
4496         text = (LPWSTR)lParam;
4497     else if (lParam)
4498     {
4499         LPCSTR textA = (LPCSTR)lParam;
4500         INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
4501         if((text = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
4502             MultiByteToWideChar(CP_ACP, 0, textA, -1, text, countW);
4503     }
4504
4505         EDIT_EM_SetSel(wnd, es, 0, (UINT)-1, FALSE);
4506         if (text) {
4507                 TRACE("%s\n", debugstr_w(text));
4508                 EDIT_EM_ReplaceSel(wnd, es, FALSE, text, !(es->style & (ES_MULTILINE | ES_COMBO)));
4509                 if(!unicode)
4510                     HeapFree(GetProcessHeap(), 0, text);
4511         } else {
4512                 static const WCHAR empty_stringW[] = {0};
4513                 TRACE("<NULL>\n");
4514                 EDIT_EM_ReplaceSel(wnd, es, FALSE, empty_stringW, !(es->style & (ES_MULTILINE | ES_COMBO)));
4515         }
4516         es->x_offset = 0;
4517         es->flags &= ~EF_MODIFIED;
4518         EDIT_EM_SetSel(wnd, es, 0, 0, FALSE);
4519         EDIT_EM_ScrollCaret(wnd, es);
4520
4521         if (es->flags & EF_UPDATE) {
4522                 es->flags &= ~EF_UPDATE;
4523                 EDIT_NOTIFY_PARENT(wnd, EN_CHANGE, "EN_CHANGE");
4524         }
4525 }
4526
4527
4528 /*********************************************************************
4529  *
4530  *      WM_SIZE
4531  *
4532  */
4533 static void EDIT_WM_Size(WND *wnd, EDITSTATE *es, UINT action, INT width, INT height)
4534 {
4535         if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
4536                 RECT rc;
4537                 TRACE("width = %d, height = %d\n", width, height);
4538                 SetRect(&rc, 0, 0, width, height);
4539                 EDIT_SetRectNP(wnd, es, &rc);
4540                 EDIT_UpdateText(wnd, NULL, TRUE);
4541         }
4542 }
4543
4544
4545 /*********************************************************************
4546  *
4547  *      WM_SYSKEYDOWN
4548  *
4549  */
4550 static LRESULT EDIT_WM_SysKeyDown(WND *wnd, EDITSTATE *es, INT key, DWORD key_data)
4551 {
4552         if ((key == VK_BACK) && (key_data & 0x2000)) {
4553                 if (EDIT_EM_CanUndo(es))
4554                         EDIT_EM_Undo(wnd, es);
4555                 return 0;
4556         } else if (key == VK_UP || key == VK_DOWN) {
4557                 if (EDIT_CheckCombo(wnd, es, WM_SYSKEYDOWN, key))
4558                         return 0;
4559         }
4560         return DefWindowProcW(wnd->hwndSelf, WM_SYSKEYDOWN, (WPARAM)key, (LPARAM)key_data);
4561 }
4562
4563
4564 /*********************************************************************
4565  *
4566  *      WM_TIMER
4567  *
4568  */
4569 static void EDIT_WM_Timer(WND *wnd, EDITSTATE *es)
4570 {
4571         if (es->region_posx < 0) {
4572                 EDIT_MoveBackward(wnd, es, TRUE);
4573         } else if (es->region_posx > 0) {
4574                 EDIT_MoveForward(wnd, es, TRUE);
4575         }
4576 /*
4577  *      FIXME: gotta do some vertical scrolling here, like
4578  *              EDIT_EM_LineScroll(wnd, 0, 1);
4579  */
4580 }
4581
4582 /*********************************************************************
4583  *
4584  *      WM_VSCROLL
4585  *
4586  */
4587 static LRESULT EDIT_WM_VScroll(WND *wnd, EDITSTATE *es, INT action, INT pos)
4588 {
4589         INT dy;
4590
4591         if (!(es->style & ES_MULTILINE))
4592                 return 0;
4593
4594         if (!(es->style & ES_AUTOVSCROLL))
4595                 return 0;
4596
4597         dy = 0;
4598         switch (action) {
4599         case SB_LINEUP:
4600         case SB_LINEDOWN:
4601         case SB_PAGEUP:
4602         case SB_PAGEDOWN:
4603                 TRACE("action %d\n", action);
4604                 EDIT_EM_Scroll(wnd, es, action);
4605                 return 0;
4606         case SB_TOP:
4607                 TRACE("SB_TOP\n");
4608                 dy = -es->y_offset;
4609                 break;
4610         case SB_BOTTOM:
4611                 TRACE("SB_BOTTOM\n");
4612                 dy = es->line_count - 1 - es->y_offset;
4613                 break;
4614         case SB_THUMBTRACK:
4615                 TRACE("SB_THUMBTRACK %d\n", pos);
4616                 es->flags |= EF_VSCROLL_TRACK;
4617                 if(es->style & WS_VSCROLL)
4618                     dy = pos - es->y_offset;
4619                 else
4620                 {
4621                     /* Assume default scroll range 0-100 */
4622                     INT vlc, new_y;
4623                     /* Sanity check */
4624                     if(pos < 0 || pos > 100) return 0;
4625                     vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4626                     new_y = pos * (es->line_count - vlc) / 100;
4627                     dy = es->line_count ? (new_y - es->y_offset) : 0;
4628                     TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4629                             es->line_count, es->y_offset, pos, dy);
4630                 }
4631                 break;
4632         case SB_THUMBPOSITION:
4633                 TRACE("SB_THUMBPOSITION %d\n", pos);
4634                 es->flags &= ~EF_VSCROLL_TRACK;
4635                 if(es->style & WS_VSCROLL)
4636                     dy = pos - es->y_offset;
4637                 else
4638                 {
4639                     /* Assume default scroll range 0-100 */
4640                     INT vlc, new_y;
4641                     /* Sanity check */
4642                     if(pos < 0 || pos > 100) return 0;
4643                     vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4644                     new_y = pos * (es->line_count - vlc) / 100;
4645                     dy = es->line_count ? (new_y - es->y_offset) : 0;
4646                     TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
4647                             es->line_count, es->y_offset, pos, dy);
4648                 }
4649                 if (!dy)
4650                 {
4651                         /* force scroll info update */
4652                         EDIT_UpdateScrollInfo(wnd, es);
4653                         EDIT_NOTIFY_PARENT(wnd, EN_VSCROLL, "EN_VSCROLL");
4654                 }
4655                 break;
4656         case SB_ENDSCROLL:
4657                 TRACE("SB_ENDSCROLL\n");
4658                 break;
4659         /*
4660          *      FIXME : the next two are undocumented !
4661          *      Are we doing the right thing ?
4662          *      At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
4663          *      although it's also a regular control message.
4664          */
4665         case EM_GETTHUMB: /* this one is used by NT notepad */
4666         case EM_GETTHUMB16:
4667         {
4668                 LRESULT ret;
4669                 if(wnd->dwStyle & WS_VSCROLL)
4670                     ret = GetScrollPos(wnd->hwndSelf, SB_VERT);
4671                 else
4672                 {
4673                     /* Assume default scroll range 0-100 */
4674                     INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
4675                     ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
4676                 }
4677                 TRACE("EM_GETTHUMB: returning %ld\n", ret);
4678                 return ret;
4679         }
4680         case EM_LINESCROLL16:
4681                 TRACE("EM_LINESCROLL16 %d\n", pos);
4682                 dy = pos;
4683                 break;
4684
4685         default:
4686                 ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
4687                     action, action);
4688                 return 0;
4689         }
4690         if (dy)
4691                 EDIT_EM_LineScroll(wnd, es, 0, dy);
4692         return 0;
4693 }
4694
4695
4696 /*********************************************************************
4697  *
4698  *      EDIT_UpdateText
4699  *
4700  */
4701 static void EDIT_UpdateText(WND *wnd, LPRECT rc, BOOL bErase)
4702 {
4703     EDITSTATE *es = *(EDITSTATE **)((wnd)->wExtra);
4704
4705     /* EF_UPDATE will be turned off in paint */
4706     if (es->flags & EF_UPDATE)
4707         EDIT_NOTIFY_PARENT(wnd, EN_UPDATE, "EN_UPDATE");
4708
4709     InvalidateRect(wnd->hwndSelf, rc, bErase);
4710 }